Thread: spark plug caps
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Old 02-13-2020, 02:48 PM   #26
Y-Blockhead
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Default Re: spark plug caps

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Quote:
Originally Posted by 1928Mik View Post
Hey Y-Blockhead, on making your own caps. How did you hold the caps stable when using a drill press? I don't want to mar the outside or bend them out-of-round with a pair of pliers.
Hi, I didn't actually use my drill press to drill the hole, just to mark center with a ½" drill bit. Sorry for the confusion.

When I drilled the hole I used a 5/16" drill bit and held the cap with my hand against my wooden work bench. The copper cap is soft and drills easily. After drilling I polished them on my bench grinder.
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