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BTEC Level 3.

Course Title/Code: 1F-SDP-DP-ENGIN-3-S

Unit 16: Engineering Drawing for Technicians Unit code: T/600/0266

Unit 17: Computer Aided Drafting in Engineering Unit code: A/600/0267

Start-U -Pla!.

Lesso! 1

Tas 1!

"pen Autocad software!

#f $ou ha%e not a&read$ done so' &ocate the (or space )witching #con!

*eft C&ic the #con to disp&a$ the menu!

+igh&ight the ,Autocad C&assic- option!ote: This wi&& change $our screen and &oad a asic arra$ of icons' drop down menus and a command &ine!our )creen shou&d &oo something &i e this:

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Tas 2!

At the C" A.D &ine at the ottom &eft side of $our screen t$pe : *# #T)Then press E.TE !

our C" A.D &ine shou&d &oo something &i e this:

The Command area now states: specif$ &ower &eft corner or 3on/off4 50!0000'0!0000

The figure shown must e 50!0000'0!0000 if it is not $ou must t$pe 0!0000'0!0000

press E.TE !

ou ha%e now set the &ower &eft corner to 8E "!

our C" A.D &ine shou&d &oo something &i e this:

ou must now specif$ the right upper corner! The e9amp&e a o%e gi%es this as:

5 20!0000' 2;7!0000 #f the figures disp&a$ed for upper right corner is not 20!0000' 2;7!0000 then $ou need to t$pe thesefigures into the command &ine and press E.TE !

ome more e9amp&es of paper si<es:

•

2;7!0000' 210!0000 =A >aper )i<e? =@? 2;7mm' = ? 210mm• 20!0000' 2;7!0000 =A ?• B; !0000' 20!0000 =A2?

ou can see that these figures 20!0000' 2;7!0000 refer to an A paper si<e!

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ou ha%e now set $our mode& space &imits for an A paper si<e!

our C" A.D &ine shou&d &oo something &i e this:

Tas !

our screen wi&& not &oo an$ different unti& $ou do this:

At the command &ine t$pe: 8oom and press E.TE !

ou wi&& then see a set of options:

T$pe: E9tents and press E.TE !

Tas !

+o&d the cursor o%er the icon for rid Disp&a$! )ing&e c&ic the &eft utton!

ing&e c&ic the &eft utton! = This wi&& turn $our #D ".?

our screen shou&d &oo something &i e this:

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*eft C&ic once! our C" A.D &ine shou&d &oo &i e this! #t is as ing $ou where $ou want the first corner position to e!

*ocate the cursor o%er the top &eft grid point and c&ic once! Drag $our o9 to specif$ other corner!

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C&ic when $ou ha%e reached the opposite corner of the grid! C&ic the &eft mouse utton once!

ou shou&d now ha%e a ectang&e' that measures =@? 20 9 = ? 2;7 units!

Lesso! ". Data anagement!

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our Data anagement fo&ders' shou&d &oo &i e this! emem er to sa%e $our wor

Lesso! " #Setti!$ di%e!sio! u!its& te't (ei$(t).

Tas 1!

*ocate the drop down menu " AT!C&ic and open TE@T )t$&e anager !#n the +eight o9' change to B!0000!App&$ the change then e9it!

rom the same drop down menu c&ic and open Dimension )t$&e anager !C&ic odif$!

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rom this menu $ou can set: Te9t ' *ines' )$m o&s and Arrows and >rimar$ Units!

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Pro*e+tio!s

irst ang&e and third ang&e proFection methods are accepta &e!

The s$m o& identif$ing the t$pe of proFection used shou&d e p&aced in a space pro%ided in the drawing &oc

Giews Using eference Arrows!

Pri!+i al ,ie

The principa& %iew on which a&& of the other %iews are ased shou&d e se&ected as eing the mostinformati%e! This ma$ e the %iew which is most recognisa &e during manufacture or use! i!e! the front %iewof a house or the side %iew of a car!

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Li!es Used o! Dra i!$s.. *ine T$pes

*ine Description!!!!!!!!!! App&ication

Continuous Thic "ut&ineEdge

Continuous Thin

#ntersection!!

Dimension!! >roFection

*eader!! +atching

Continuousreehand

*imits of >artia& orinterrupted %iew

Continuous Thin(ith 8ig<ags )hortened )ections

Dashed Thic +idden "ut&ines+idden Edges

Dashed Thin +idden "ut&ines+idden Edges

Chain Thin Centre &ines*ines of )$mmetr$

Chain Thic )pecia& )urfaces

Chain ThinThic ends Cutting >&anes

Chain Thindou &eHdashed

Centroida& *ines#nitia& "ut&ines >rior to

orming / achining

# U E )+"(#. *#.ET >E)

Li!e T(i+ !esses

Two thic nesses of &ine shou&d e used on a drawing! The Ithic I &ine shou&d e at &east twice as thic as theIthinI &ine! The thic ness of the &ine shou&d e ased on the si<es!!! 0'1Jmm 0'2Bmm 0' Bmm 0'Bmm 0'7mm1'0mm 1! mm and 2mm

Li!e s a+i!$

The minimum space etween para&&e& &ines shou&d a&wa$s e greater than twice the thic ness of the hea%iest &ine!

Leader Li!es

*eader *ines terminate

• (ith a dot if the$ end within the out&ine of the item eing identified!

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• (ith an arrow if the$ end on the out&ine

• (ithout a dot or an arrow when pointing at a dimensions &ine