Pin Diameters and Drill Sizes

I

Intelligence3

New member
I am intending to buy some very thin diameter brass rod and some drill bits for help with pinning small pieces. How much larger than the diameter of the brass rod is best for a drill bit? I was looking at .032 diameter brass rod (variance advertised as +/-.002 inches). I was looking at a #65 drill bit with a .035 diameter, is that likely to be too tight?
 
C

Chrome

New member
I'd say that's close to perfect, when I'm pinning I like my drill bits to be so tight that I wouldn't need to glue the pins afterwards, that leaves the best connection and stability, the larger the hole is compared to the pin, the more the pin loses it's purpose.

But I'd advice you to buy 0.023in drill bits, that way you can use common steel wire to pin your models, cheap as hell and at those lengths, strong as ehm, steel.

Oh, and if you're buying drill bits of either of those sizes, buy a shitload, I've lost count of how many titanium bits I've broken just because I drilled slightly off centre, dropped the pin vice or simply knocked it over while having forgotten a drill bit in it.
 
cassar

cassar

BALLSCRATCHER
same size or if its a motorised drill you intend using smaller as the friction causes a little melt in resin/plastic and can make the drill hole larger
 
I

Intelligence3

New member
I'm trying to graduate from the kits to my own supplies. Buying the bits and rods from industrial suppliers is a fraction of the price, I just need to determine the best ratio of sizes.
 
Master of fact

Master of fact

Member
Nah its not the tinternet, its from when you were a kid and you kicked your ball into the trees and found a wank mag, GAME OFF. If you guess who said the quote il give ya a cookie. Think he is from your neck the woods TBS
 
Einion

Einion

New member
Archimedes the Dog said:
I'm trying to graduate from the kits to my own supplies. Buying the bits and rods from industrial suppliers is a fraction of the price...
Click to expand...
Good goal!

Archimedes the Dog said:
...I just need to determine the best ratio of sizes.
Click to expand...
Well the ones you mention certainly seem more than adequate. And realistically, you can easily drill a larger hole (sometimes accidentally!) in plastic, resin or white metal, so even if the wire and bit were exactly the same diameter you could achieve a hole that'll accommodate enough glue for a good bond.

Edit: my go-to bits for pinning with standard paperclips are too small, but it's very easy to enlarge the holes enough even when drilling by hand.

Einion
 
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D

Dedwrekka

New member
Use a drill bit the same diameter as the rod you're using. In most cases you'll end up accidentally making the hole bigger when you hand drill it, and if you don't the the rod will fit securely anyways without needing any major sort of force to insert it. If it's too snug, put the drill bit in the hole and wobble it a little while turning it to widen the hole.
 
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