4.70mm #12 G Silver Steel

4.70mm #12 G Silver Steel

This topic has 28 replies, 12 voices, and was last updated 8 June 2023 at 12:52 by Peter Cook 6.

Viewing 4 posts - 26 through 29 (of 29 total)

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30 June 2022 at 19:33 #603659
JasonB
Moderator
@jasonb
Michael the suggestions were to use DRILL BLANKS not drill rod, the latter is what they call Silver steel in the US and is just a carbon steel with ground finish. Drill blanks are blank drills available in HSS or Carbide

HSS ones are hardened and ground all over not even soft shanked like a drill bit

Edited By JasonB on 30/06/2022 19:39:12
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30 June 2022 at 20:20 #603664
Michael Gilligan
Participant
@michaelgilligan61133
O.K. that’s fine … I’ve learned something

Thank you

MichaelG.

.

Doesn’t get any easier though … when this is a direct quote from the Cromwell site:

”Besides this, drill blanks can be forged into custom tools or bits on and can be modified to create drills or punches that are specialised to any task, via the use of a lathe or another suitable machine.”

Ref. __ https://www.cromwell.co.uk/shop/cutting-tools/drill-blanks/c/391501

Edited By Michael Gilligan on 30/06/2022 20:30:05
30 June 2022 at 20:26 #603665
JasonB
Moderator
@jasonb
Interesting that a No 13 drill is 0.185" which is 4.7mm well 1 micron under to be exact.
8 June 2023 at 12:52 #647862
Peter Cook 6
Participant
@petercook6
To resurrect and close this thread, to help anyone who stumbles across it when trying to get silver steel to make watchmakers stakes.

Rennie Tool Company in Manchester stock the raw material and explicitly state it's for staking sets ( and priced closer to Bergeron!).

4.7mm (0.185" Thou) Diameter x 330mm Long Metric Silver Steel (BS1407) (rennietool.co.uk)
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