Archimedes type drill tool

mojo · March 14, 2020, 02:58:42 PM

Are there several sizes of this type of tool available?
Just had one delivered (no size specified in the advert), and I was rather surprised that the chuck would not open to accept beyond 1 mm. diameter drill.
Maurice C.

TrevL · March 14, 2020, 03:22:24 PM

Yes, that's about par for the course, anything larger you'll need to go for something like these for example.
https://www.ebay.co.uk/itm/2-pc-Brass-Pin-Vice-Vise-Set-0mm-to-2-8mm-Range-Hobby-Crafts-Drill-Mill-0232-552/141845709192?epid=0&hash=item2106a9c188:g:LLYAAOSw7FRWY1en

Malc · March 14, 2020, 03:42:51 PM

I use one to drill holes through sleepers to take track pins. 1mm is big enough for that.

mojo · March 14, 2020, 03:47:52 PM

Trev, thanks for the link, I have since found an archimedes type which according to the description (same site)
opens to 2 mm. Does look cheap & nasty though!
Maurice C.

PLD · March 14, 2020, 10:43:22 PM

Quote from: mojo on March 14, 2020, 02:58:42 PMAre there several sizes of this type of tool available?

Yes (unless you get a very expensive one with interchangeable collets). The practicalities of the design of the chuck is such that it will be good for a finite range. One designed to open sufficient for larger sizes will not grip sufficiently on smaller bits.

Quote from: mojo on March 14, 2020, 02:58:42 PM
Just had one delivered (no size specified in the advert), and I was rather surprised that the chuck would not open to accept beyond 1 mm. diameter drill.

Sounds like a supplier to avoid - Would you order from someone who advertised "Shoes" (no size specified in the advert) and trust to luck that they would fit your size 10 feet??

Quote from: mojo on March 14, 2020, 03:47:52 PMI have since found an archimedes type which according to the description (same site) opens to 2 mm. Does look cheap & nasty though!

You get what you pay for with most tools... Usually worth paying a bit more for better quality...

swisstrains · March 15, 2020, 09:03:48 AM

I have this one bought from my local model shop. Nicely made but not particularly cheap. Interchangeable collets from 0.1 - 3.2 mm.
https://www.expotools.com/cgi-bin/sh000001.pl?WD=archimedes&PN=75040%2dProfessional%2dArchimedes%2dDrill%2dSet%2d75040%2ehtml#SID=92

mojo · March 15, 2020, 11:09:12 AM

Hi John,
That looks a decent piece of kit, does it have a return spring?

mojo · March 15, 2020, 11:10:56 AM

PLD,
Well respected supplier, Eileens Emporium.

swisstrains · March 15, 2020, 11:51:03 AM

Quote from: mojo on March 15, 2020, 11:09:12 AM
Hi John,
That looks a decent piece of kit, does it have a return spring?

Yes.

jpendle · March 15, 2020, 05:03:14 PM

Quote from: swisstrains on March 15, 2020, 09:03:48 AM
I have this one bought from my local model shop. Nicely made but not particularly cheap. Interchangeable collets from 0.1 - 3.2 mm.
https://www.expotools.com/cgi-bin/sh000001.pl?WD=archimedes&PN=75040%2dProfessional%2dArchimedes%2dDrill%2dSet%2d75040%2ehtml#SID=92

AH!! Now I understand what an Archimedes drill tool is. @TrevL 's picture of a pin vice threw me.

In my world DCC is easy, but worm gears and other mechanical gizmo's are the work of the devil

John P