The cut out center hole of a template is set directly over the drilled engine mount hole.
A Sharpie pen makes marks while the template is held in place.
(Looks like I'm due to make another card stock template for the antenna marking.)
This is a drilling tool I made and used since the first Sputnik kit was made five years ago.
A 1/2" hole was drilled into the wood block and a long 13mm engine casing glued into place. You can see the casing slid into the engine mount hole already drilled into the ball. The Leg Jig tool actually slides down flush with the surface of the ball.
The angled black line shows the travel of the leg drilling dowel. A 1/8" hole was drilled through the middle of the jig.
A 1/8" diameter dowel was sharpened and marked 1" from the point.
With the jig casing in the 1/2" hole the dowel is slid into the angled hole. The dowel tip is lined up with the Sharpie dot marks made in the last step.
The dowel is pressed into the ball up to the 1" deep mark on the dowel.
From the side view you can see the dowel mark almost at the surface of the ball.
This is repeated four times on each ball.
The jig is rotated to the next hole mark and the dowel pressed in up to the 1" mark.
Repeat on 29 more balls.
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