Anyone know?

[Bri62]

Hi what size the shank is on these drill bits
[HEADING=2]Tungsten Steel Drill Bit DSPIAE DB-01-20[/HEADING]

[Tim Marlow]

https://exito.site/en_GB/p/DSPIAE-DB-01-2.0-Modelling-drill-bit-2.0mm/60781

3.175mm according to this place Brian. I think that’s 1/8 inch in old money….

[Andy T]

I have a set and they are indeed 3.2mm / 1/8"

They don't fit in some of their own holders that are 3.0mm :tears-of-joy:so check that as well.

To be honest I don't rate them, I've broken half of mine after only a couple of uses, whereas the modelcraft / microbox set I have is still going strong after a few years. Never broken one, but lost several lol

[Bri62]

Thanks guys looking for some 2.3mm ones the drill I have won't take 1/8"

[Tim Marlow]

To my mind, a 2mm HSS drill should be tough enough for any modelling application. Why do you need the shank on it?

[Bri62]

o my mind, a 2mm HSS drill should be tough enough for any modelling application. Why do you need the shank on it?

I don't need it but the 2.3mm shank fits the collet in my tamiya electric drill nice and having them all the same is good no matter if it's a 0.4 or 2.3 drill

[Tim Marlow]

I don't need it but the 2.3mm shank fits the collet in my tamiya electric drill nice and having them all the same is good no matter if it's a 0.4 or 2.3 drill

Ah, get it now, you have a collet chuck, not a four jaw. Would another approach be to look for a different collet set for the chuck so standard drills would fit?

[Bri62]

The actual hole in the screw on collet cover is only small so that's the limiting factor.
found these

[Tim Marlow]

Not making it easy for you are they . Looks like they‘ll do the job though :thumb2:

[Bri62]

Yeah Tim still got a shed load of holes to open up and the clear plastic is very brittle and blunts them pretty fast

[Tim Marlow]

You can resharpen HSS quite easily. Used to be able to buy a device to sharpen mini drills, but I can’t remember what it was called……

[langy71]

You can resharpen HSS quite easily. Used to be able to buy a device to sharpen mini drills, but I can’t remember what it was called……

Drill sharpening tool ?.... (sorry mate, couldn't resist...lol)

[Guest]

I have a set and they are indeed 3.2mm / 1/8"

They don't fit in some of their own holders that are 3.0mm :tears-of-joy:so check that as well.

To be honest I don't rate them, I've broken half of mine after only a couple of uses, whereas the modelcraft / microbox set I have is still going strong after a few years. Never broken one, but lost several lol

Micrbox every time, some of the other knockoff offerings are s............ and made of the same stuff. Like you I can go through the cheapies like water...

[Tim Marlow]

It’s called a wishbone drill sharpener Brian, designed for micro drills.

Drill sharpening tool ?.... (sorry mate, couldn't resist...lol)

Very droll Chris…….

[Tim Marlow]

Micrbox every time, some of the other knockoff offerings are s............ and made of the same stuff. Like you I can go through the cheapies like water...

Must admit I just buy replacements as job lots ten at a time and use the micro box to hold them. Don’t break many, even the very small ones , but I don’t use them powered. I just use them manually powered in a hand Chuck. I think powered mini drills are designed to break drills and sell more drills :upside: In sheet stock I sometimes just drill a pilot hole and open it to size using a five sided tapered broach.