how to make an iris diaphram watch

8/9/2019 How to Make an Iris Diaphram Watch

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http://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/

Food Living Outside Play Technology Workshop

How to make an Iris Diaphram watchby ShadeStrideon April 21, 2012

Table of Contents

How to make an Iris Diaphram watch ...............................................................................................

Intro: How to make an Iris Diaphram watch .......................................................................................

Step 1: First thing first .......................................................................................................

Step 2: Bottom and top half of casing ............................................................................................

Step 3: Cam plate (and pie) ...................................................................................................

Step 4: Leaves and things .................................................................................................... 1

Step 5: Some assembly required ............................................................................................... 1

Step 6: Strap and watch ..................................................................................................... 1

Step 7: Done! ............................................................................................................. 1

Related Instructables ........................................................................................................ 1

Advertisements ............................................................................................................... 1

Comments ................................................................................................................ 1
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Author:ShadeStride

I am a regular guy who does anything and everything I find interesting. I believe in the power of the mind and it's ability to make a vision into somethingsubstantial. I firmly believe with the proper application of hard work one can create, build, do anything.

Intro: How to make an Iris Diaphram watchFirstly I must take off my top hat and bow to Gogglerman for his wonderful creations and inspiration. He is a true artist and this project would not have been conceivednot for him and it would not have been attempted without his inspirational work. If you enjoy this project I hardily suggest you look up Gogglerman and get ready to bewowed. Now on to the fun part. I constructed this Iris aperature out of plate and sheet brass. On this first attempt at an Iris aperature I used silver solder and a propantorch to solder the pieces together. If no one has ever tried this I would submit that it is a pain in the hind quarters. On the subsequent projects after this piece I utilizedhigh powered electric soldering iron which proved to be much easier. Due to a lack of planning and a mistake on my part I ended up using a five leaf mechanism inste

of six leaves, this gave it a slightly less than professional finish but overall I am pleased with it. I hope you enjoy it. I will add more body to this instructable as time passo keep an eye out for changes to it and new instructables I will be posting.

Thank you Gogglerman!(Here is a link to Gogglerman's page)http://www.instructables.com/member/gogglerman/
http://www.instructables.com/member/gogglerman/http://member/ShadeStride/http://member/ShadeStride/


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Step 1:First thing firstAlright, the first step is to study this instructable. If you try your best to read all the directions carefully and still find yourself with questions then please feel free to contme.

Its a good idea to have some things down on paper before you start this project by asking yourself some questions such as How big do I want this? What materialscan I buy/salvage? What tools do I have at my disposal? What do I want i t to look like? Once youve thought through the process a little and considered yourdesired material and what supplies you have on hand you can adjust the directions hereafter to fit what you want. It also helps to draw out a concept of what you wantfinished product to look like.

For the sake of clarity I am going to list the tools I used as well as provide some pictures of them. That list follows.-Dremel tool-Metal snips (The kind that cut either direction.)-Needle nose pliers-Small propane torch (or High power soldering iron.)

-Silver or tin solder-Flux (Preferably non-resin.)-Assorted small files (The more shapes the better.)-Dremel bits (Cutting discs, small sanding drum, wire brush, sandpaper.)-Calipers (Could also use a straight edge/square and a scribe.)-Sharpies (Fine point and super fine. These are handy for any project or prank.)-Ruler (It is helpful to have a stiff one and the flexible variety used for sewing.)-Sandpaper of varying grits-Scotchbright pads-Pipe clamps-Vise-Bi-metal hole saw bits-Drill press-Drill bits-Refractory block (You can also use a block of wood but it doesnt work quite as well and has a tendency to burn.)-A couple of bowls or cups filled with water (To quench hot parts.)-A respirator (Or dust mask.)

-Center punch (Or a nail would work)-Brass, rawhide, or rubber hammer-A piece of 1 diameter pipe (Or slightly larger or smaller, for bending strips into circles.)-Scrap piece of 2X4

In addition to the tools l isted you will need materials, that list follows.-Brass or copper sheet (.032 and thinner preferably. The housing it made from a thicker brass and the leaves are from a thinner brass.)-A ton of cheap ball point pens (The ones with the brass tips. Or you could use small brass round stock.)-Brass plate (If you are making a solid cam plate as shown. I will also describe a cam plate made from brass sheeting and show a picture incase you cant get any thicplate.)-Leather (If you intend to make a leather band.)-Graph paper (For layout of the parts)-Unlined paper (Incase you want to do a concept drawing or write down some calculations or draw a hummingbird sipping orange soda through a crazy straw.)-Poster board (To make a slightly more substantial pattern for parts.)-Brass nut and bolt

PLEASE DO NOT get discouraged by these lists! These are some big lists and if you were to go out and buy all of these things for one project it would cost a ton ofmoney. I have collected these tools over a span of some odd years but made due without them on previous projects. My point is if you dont have all of these tools loo

around and ask yourself what the function of the tools are and what DO you have that would work instead? Youd be surprised at how creative you can become whenyou are poor or broke. I have used a file to cut thin metal before (it sucked) you could also use a jewelers saw, or a hacksaw with the proper care. So dont worry. Jusloosen up your creative skills and improvise.

(Safety warning)When grinding or sanding any metals it is a good idea to have adequate ventilation and to wear a dust mask or respirator, that dust can get in your lungs. No fun. Alsois a good idea to be weary of some solders because they contain lead, so be careful and make sure to have enough ventilation to take away the fumes and be sure towash your hands after using it.

Image Notes1. Dremel tool

Image Notes1. Metal snips


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Image Notes1. Needle nose pliers

Image Notes1. Assorted small files

Image Notes1. Small propane torch

Image Notes1. Silver solder

Image Notes1. Flux

Image Notes1. Cutting wheel dremel bit


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Image Notes1. Wire brush

Image Notes1. Scotchbright wheel

Image Notes1. Sanding drum

Image Notes1. Dial calipers

Image Notes1. Pipe clamp

Image Notes1. 2" hole saw bit


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Image Notes1. Respirator mask

Image Notes1. Brass dust that could be in your lungs if you don't use a mask

Image Notes1. 1/4" brass plate

Image Notes1. .032 brass sheet package

Image Notes1. Cheap ball point pen

Image Notes1. Brass tip of the ball point pen


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Step 2:Bottom and top half of casingHey! Im glad to see youre still reading and you didnt get scared off by the preliminary lists. I based my design off of the size hole saw bits I had, all I had was a 2, 11/2 and a 1 bit. So I knew the diameter of my watch casing was going to be 2 . The height I just guessed at really; I knew my brass cam plate was about 1/4 thick soI had to have around 1/8 extra height overall so the leaves could sit comfortably on top of the plate and close without impeding the movement of the mechanism. I masome rough calculation and set my caliper to close to 3/8. I then used the calipers to scribe a line on my brass sheet (.032 thick) and cut it out using a cutting wheel wmy Dremel. I cleaned up the rough edges with sand paper and files and ended up with a strip of brass sheet. I then figured up the circumference of 2 by using pi (not tasty kind, the mathematical kind) and cut the strip about 1/16 3/32 short. I then utilized my rubber hammer and a piece of pipe I had clamped into the vise andbent/hammered the strip into a rough circle. Then I took a pipe clamp and clamped up the strip till the ends of the strip met, making sure there was about 1/16 of thestrip sticking up above the clamp. I then smeared some flux on the ends that were butting together and set that aside. I then clamped my brass sheet (.032 thick) to apiece of 2X4 and my drill press table. I then chucked up my 2 hole saw bit and made sure there was enough brass around the bit to cut a full 2 hole without cutting ityet. I then chucked up my 1 hole saw bit and cut the center hole. Then I put the 2 bit back in and cut the 2 hole making sure the center drill bit matched up with theoriginal hole in the 2X4. This left me with a washer shaped piece. I sanded and smoothed the rough edges and placed the washer shaped piece on my refractory blocsmeared some flux on it and set the brass strip (in the pipe clamp) on top of the washer piece so the brass ring (in the clamp) was touching the washer. Then I solderethe two pieces together and the ends of the ring to each other which created the top half of the watch casing. Then I quenched it in water and set that whole piece asid

Then I used my 2 hole saw bit and cut another washer shaped piece out of my sheet brass (.032 thick) without cutting a 1 center hole. Then I cut another strip of brabut this time I made it slightly wider about 1/8 then I cut the length to match the circumference of the 2 washer piece. Then I bent/hammered the strip into a rough cirand put it in the pipe clamp but this time (after application of flux) I slid the 2 washer piece inside the strip so the strip encircled the washer. Then I clamped it down ansoldered the joints together which created the bottom half of the casing. Then I took a brass nut and sanded it down till it was about 1/8 thick and soldered it around thcenter hole in the 2 washer shaped piece.

Image Notes1. Brass strip

Image Notes1. Rough formed circle strip



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Image Notes1. Brass plate which will become the cam plate

Image Notes1. Bottom casing

Image Notes1. Brass nut which I soldered to the bottom

Step 3:Cam plate (and pie)I then used my graph paper to layout a 2 circle which was sectioned into wedges like a pie (the tasty kind) then I drew an inner 1 circle. Then I cut on the wedge lineswith a razor from the inside circle to the outside. Then I set that aside. I then clamped up my brass plate and used the 1 hole saw bit to cut an inner circle and then th2 hole saw bit to cut the outside circle which left me with another washer shaped piece of plate. I then used my calipers to measure from the inside of the ring to theoutside. I then set the caliper to half that and scribed a circle on the brass all the way around. Then I took my paper circle with the wedge lines cut out and placed it onwasher shaped piece and used a super fine tip sharpie to mark the lines onto the plate. I then used my calipers again and measured the thickness of the plate and halthat and marked a line around the entire outside of the ring. Then I used my dremel and a cutting wheel and cut down on the line to make channels in the plate to the I marked on the plate. I then used a dremel with a sanding drum on it to sand evenly around the outside of the cam plate till it fit snuggly but still turned smoothly insidethe top half of the watch casing. Then I sanded the outside of the top half of the casing and the inside of the bottom half of the casing with the sanding drum till the tophalf fit snuggly into the bottom half (dont force them together because its a pain to get them apart).


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Image Notes1. Pattern for cam plate grooves2. Pattern for cam plate grooves


Image Notes1. Brass plate which will become the cam plate

Image Notes1. Cam plate with layout marks

Image Notes1. Grooved cam plate

Image Notes1. Finished grooved cam plate


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Step 4:Leaves and thingsNow on to the leaves. I started by drawing out a 1 circle with a 2 circle around it on graph paper. Then I cut the circle in half and drew a rounded end on one side andslightly offset egg shape end on the other. On the rounded side I marked a hole about 1/8- 3/16 from all sides in the middle of the rounded part. Then I marked a holeat about 3/32- 1/8 from the outside near where the end started to round inward. I then cut this out and transferred it to poster board. I poked tiny holes where I hadthem marked and used this template to layout the leaves on the thinner brass (.016 thick). I then cut these out using metal snips, sanded and smoothed the edges andset them aside. I then took my ball point pens and disassembled them and took the brass tip off of them. I then put the brass tips in a cup filled with water or rubbingalcohol to get most of the ink out. I then selected a drill bit that matched the diameter of the brass tip closely. I then used a center punch to make a small indention in tleaves where I had marked the holes and used the drill bit I had selected to drill in holes. I then used two pieces of wire and strung the stack of the leaves together. I thused the dremel with the sanding drum to sand all of the leaves down to match each other. I then used scotchbright on the leaves and applied flux to the holes andsoldered the brass pen tips into the holes to create prongs sticking in opposite directions on either end of the leaves. I then used a cut off wheel to trim the excess bit othe prong and sanded the soldered areas relatively smooth.

Image Notes1. graph paper pattern

Image Notes1. Cheap ball point pen

Image Notes1. Brass tip of the ball point pen

Image Notes1. brass pen tip


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Image Notes1. Oblong eggshaped end.

Image Notes1. Rounded end

Step 5:Some assembly requiredI then went back to the top half of the casing and used my calipers to mark a center line all the way around the top ring then I used the piece of paper with the wedgelines cut out and marked the lines on the top ring. I then slid the top half of the casing over a block of wood and used a center punch to mark where the sharpie linesintersected with the scribed caliper line. Then I used the drill bit to drill holes where I marked with the punch. Then I stacked the leaves on the cam plate and slid it into

top half of the casing, making sure the pins in the leaves lined up with the holes in the top ring. Then I twisted the cam plate till the iris was fully opened and used asharpie to mark a line on the bottom of the plate to the outside of the casing then I twisted the iris till it was as closed as possible and used the line on the plate as areference and marked on the outside of the casing. This gave me the full length of travel the plate made. I then used my calipers to mark a line 1/8 from the bottom ofthe top casing from one mark to the other. I then used a cut off wheel to cut down that line which made a slot in the side of the casing. Then I took the assembled top hand slid it down into the bottom half as far as it would go and used a sharpie to mark a line around the top edge of the bottom half on the side of the top casing half. ThI took the top half back out and set the top half of the casing next to the bottom half. I then used the marked sharpie line on the top half to make sure it was lined up anmarked a reference line where the slot was onto the bottom half. Then I marked the length of the slot on the bottom half and used the cut off wheel to cut a slot in it. ThI assembled the whole thing once more.

Image Notes1. Leaves inplace on top half

Step 6:Strap and watchI then took a small piece of brass rod and chucked it into the drill press. I then used several files to make a decorative pin which I cut to length and slid into the slot on casing and into a slot on the cam plate. Then I tested the movement and disassembled all the pieces again. I then sanded, smoothed and polished all of the pieces usthe dremel and hand sand paper and scotchbright pads. Then I measured my wrist and added around 2 in length. Then I drew out a simple design for a strap on somposter board which I cut out and transferred to some leather I selected for the strap. I carefully cut out the strap using the metal snips. Then I marked the location whewanted the watch casing and drilled a hole in the leather that corresponded with the hole in the center of the bottom casing. Then I attached two buckles I purchased afabric store to one end of the strap by drilling a hole in the end of the leather piece and pushing the buckle pin through it and wrapping the leather through the buckle adrilling two holes through the top part of the leather and the tail end and sewing them together. Then I but the strap on my wrist and pulled the two strap ends through buckle and marked where the buckle pins needed to go. Then I took the strap off and drilled a few holes in the strap ends and tested the fit. Then I took the strap off mwrist again and put one of the cut out washers from the first ring I cut onto the backside of the strap. Then I took a brass bolt that fit with the nut I had soldered into thebottom casing and pushed it through the washer and through the leather. I then took the bottom half of the casing and screwed it onto the bolt. I then marked the boltwhere it came through flush with the nut and I unscrewed the casing. I then used the cut off wheel to trim the bolt to the right length. I then took a watch I purchased frthe store and cut off the bands and sanded the little tabs off so it was smooth all the way around. Then I lined the watch up with the slot that the pin would go into on thcam plate and drilled out an area for the little winder on the watch to go. Then I reassembled all of the pieces and soldered the pin into the slot in the cam plate. Then screwed the watch casing back down on the strap and used the backside of a butter knife to do some tooling on the strap.


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Image Notes1. Decorative brass pin which is used to turn the mechanism

Image Notes1. Paper template for the watch band

Image Notes1. Cut out and tooled leather band with the small brass bolt sticking through.2. Simple tooling on the strap

Image Notes1. Small brass bolt and brass washer on backside of the band

Image Notes1. Brass nut on bottom side of the watch casing


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Image Notes1. Sanded watched

Image Notes1. Recess for the watch winder to go2. Recess for the watch winder to go

Image Notes1. Watch in the cam plate

Step 7:Done!Now if youre still reading, youve made it! Congratulations and thank you for sticking with this sometimes boring and difficult but rewarding process. I appreciate yourwillingness to try and do. Good luck with all your future projects. Like I said in the beginning if you have any questions now that youve read over the directions feel freto contact me. I look forward to adding more instructables and working with everyone to make these visions of ours a reality. I tip my top hat to you and bid you farewenext time.

P.s. here are some pictures of the finished product.


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Comments

22 comments Add Comment

Gibbifordsays: May 7, 2013. 9:21 PM REP.How on Earth will you change the battery when it dies?

thechocolatistsays: Feb 27, 2013. 3:42 AM REPNice job! Looks wonderful. Thanks for the inspiration!

OpIvysays: Oct 11, 2012. 7:47 AM REPReally nice project :) where can I find brass or copper sheets online for a good price?

nerd7473says: Sep 21, 2012. 12:51 PM REPcool

rjessupsays: Sep 11, 2012. 6:51 PM REPShade stride thanks for this instruct-able the original was beautiful but yours was much more informative.

mjursicsays: May 13, 2012. 8:00 PM REPNice project. You say dremel tool--that's no dremel--it's a FOREDOM! That said, I love the project. May try to do one myself. Probably not as nice as yoursthough.

ShadeStridesays: May 14, 2012. 3:41 PM REPLol. Well it's a cheapo from harbor freight. But I say dremel because the same thing can be achieved with a dremel and it's a brand name that has beenadopted to include any off brand rotary tool. As far as doing your own version I am probably going to put together some patterns for anyone interested doing it. :) thanks for your comment!

Nymeiasays: Jul 5, 2012. 12:05 AM REPcould you please upload the patterns please? :D struggling a bit with the iris pieces for a different project :)

paqratsays: May 15, 2012. 10:26 PM REP

It looks like a flex shaft. Flex shafts are, in my opinion, a lot easier to use than a dremel hand tool and, I believe capable of greater speed with lessvibration.

zomzillasays: May 18, 2012. 7:12 AM REPout of interest: did you look at other types of iris?if so why did you choose this type?

paqratsays: May 15, 2012. 11:03 PM REPCongratulations on a very good instructable.
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hayniesays: May 5, 2012. 9:48 PM REPwhat is flux for i know its for soldering but what perpous

switch62says: May 8, 2012. 6:13 AM REPAll metals will develop an oxide film when heated. This film stops the solder from "sticking" to the metals. The flux cleans the metals being joined andprotects them from oxidization until it sticks. Soldering is actually an alloying process where the surface of the metal and the solder form an alloy. Thiswill not occur with a metal oxide in the way.

graboid90says: May 13, 2012. 5:41 PM REPI'm sorry to inform you that soldering does not form an alloy. An alloy is defined as a metal made by combining two or more metallic elements,

especially to give greater strength or resistance to corrosion. When soldering, the base metal and the solder metal do not combine.

graboid90says: May 13, 2012. 5:41 P(removed by author or community request)

switch62says: May 13, 2012. 8:44 PM REPThen my Engineering Chemistry professor was wrong. Sorry, but the surface of the base metal and the solder do form a very thin alloy layer. Thlayer may only be a few atoms thick but it is an alloy.

Wikipedia : Soldering - Processes, "Soldering differs from gluing significantly in that the filler metals alloy with the workpiece at the junction toform a gas- and liquid-tight bond."

http://www.chemicool.com/definition/solder.html

http://technologyinterface.nmsu.edu/spring97/electronics/solder/solder.html

ShadeStridesays: May 15, 2012. 3:53 PM REPAs far as I've researched I believe switch is right. Good explanation. :)

monsterlegosays: May 10, 2012. 6:27 PM REPI have always wanted one of these, I'll have to get around to it some day.

KontaKtsays: Apr 25, 2012. 9:57 AM REPYou can't enter this in a contest! It's a copy off of a different instructable.

ShadeStridesays: Apr 27, 2012. 3:57 PM REPWell it's loosely based on another instructable. That's true but it is different in design and the instructable on which it is based has no textual content onthe construction of the object. So I had to figure all of that out on my own and I did post textual directions which are totally new from the project I looselybased this on. The methods which I used to construct this are surely different. Also my entry was approved and I do give credit to the original for thegeneral idea so they must be aware of it. I would also point out that there are other entries based loosely on other instructables, such as goggles andthere is a monocle and any number of other things which might have been inspired by other instructables. As far as instructables inspired by otherinstructables go that would include ALL instructables because without the first instructables posted no one would have the thought to post one.

joedog86says: May 10, 2012. 5:32 PM REPThank you for taking the time to document it all! That first iris diaphragm watch Instructable led me to spend a few days investigating how irises wowhereas if he had documented it as well as you have here then it would have saved me some effort!

KontaKtsays: Apr 30, 2012. 11:38 AM REPOk then. that sounds good.
http://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/KontaKt/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/KontaKt/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/joedog86/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/joedog86/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/ShadeStride/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/ShadeStride/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/KontaKt/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/KontaKt/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/monsterlego/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/monsterlego/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/ShadeStride/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/ShadeStride/?utm_source=pdf&utm_campaign=commentshttp://technologyinterface.nmsu.edu/spring97/electronics/solder/solder.htmlhttp://www.chemicool.com/definition/solder.htmlhttp://en.wikipedia.org/wiki/Solderinghttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/switch62/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/switch62/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/graboid90/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/graboid90/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/graboid90/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/graboid90/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/switch62/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/switch62/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/id/How-to-make-an-Iris-Diaphram-watch/?utm_source=pdf&utm_campaign=comments#DISCUSShttp://www.instructables.com/member/haynie/?utm_source=pdf&utm_campaign=commentshttp://www.instructables.com/member/haynie/?utm_source=pdf&utm_campaign=comments

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