What metal is a telescopic aerial made of

[bugbear]

Oh, the hole saw works - just drill 4-8 turns, remove, blow, repeat.

The screw holes are only 3/8" deep - it'll be fine!!

BugBear

 

[ED65]

another glorious day in the corp

Every meal a banquet, every formation a parade!

 

[ED65]

I dropped to 4 symmetric teeth with the same result (although that one tended to shear out the core plug a little early).

So I think it's all about the gullets.

FWIW I'm sure I've seen something like this with just two teeth, really really big ones. Maybe on a Japanese gimlet?

Re. the previous tool I mentioned above I can't for the life of me find the page again unfortunately, but I can't imagine it would contain any starling revelations you'd need to improve the performance given what you've learned so far

 

[NazNomad]

Just seen this on Pinterest, which would be perfect for small pin removal.

 

[bugbear]

Just seen this on Pinterest, which would be perfect for small pin removal.

Yes, that's the kind of home made mini hole saw the thread is about.

BugBear

 

[Sheptonphil]

Regardless of what size removal tool used you can then re-drill the hole with a decent sharp drill bit the same size as a plug size you can make. So if you use a 3mm tube drill, you can then redrill to 4mm if you have 4mm plugs.

Phil