A pattern needed to be designed for the part shown in the figure on next page using the following allowances $($ Follow the order of the allowance given below $)$

$$ Machining Allowance $1$ mm $/$ side

$$ Shrinkage Allowance $5\%$

$$ Draft Allowance $4$ degrees

$$ Rapping$/$Shaking allowance $0\mathrm{.}5$ mm

Do the following

i$.$ Decide the type of pattern to be made $($single piece, split piece etc.$)(1$ mark$)$

ii$.$ Perform step$-$by$-$step calculations to find the dimension of the pattern after each allowance. $(8$ marks$)$

iii. Draw the Final Shape of the Pattern showing the Final Dimensions $(1$ marks$)$