Back saw for cutting steel and brass?

[not done it yetParticipant @notdoneityet]

Posted by Nigel Watts on 27/11/2019 13:25:29

Earlier in the week I was filing the end of some 1/4 inch silver steel rod down to a 7mm square at my clock club to fit into a fly cutter arbor on one of their milling machines.

How did you manage to get 7mm square from 6.35mm round?

[Brian GParticipant @briang]

Posted by Michael Gilligan on 27/11/2019 14:14:00:

 

As per Brian’s link … These are the ARC ones [which have ‘half round’ edges]

Edited By Michael Gilligan on 27/11/2019 14:23:23

The ones I linked to were "joint square edge" Michael, as I assumed that the slots should have a flat bottom.

Brian G

EDIT:  Sorry Michael I finally grasped what you meant, follow the saw with a slotting or round edge file then finish off with the square one.

Edited By Brian G on 27/11/2019 17:44:13

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Brian G on 27/11/2019 17:39:12:

Posted by Michael Gilligan on 27/11/2019 14:14:00:

As per Brian’s link … These are the ARC ones [which have ‘half round’ edges]

Edited By Michael Gilligan on 27/11/2019 14:23:23

The ones I linked to were "joint square edge" Michael, as I assumed that the slots should have a flat bottom.

Brian G

EDIT: Sorry Michael I finally grasped what you meant, follow the saw with a slotting or round edge file then finish off with the square one.

Edited By Brian G on 27/11/2019 17:44:13

.

My apologies, Brian … The ones that I bought from ARC, and photographed, were ‘joint round edge’

**LINK**

https://www.arceurotrade.co.uk/catalogue/results.aspx?search=joint+round+edge

MichaelG.

[File HandleParticipant @filehandle]

model making saw blades that fit in knife handles will cut brass, mine have 42tpi.

[JohnFParticipant @johnf59703]

I use modified 32 tpi hacksaw blades in a pad saw handle, I have used this method for many years and it works well. I use part blades and grind the teeth flat on each side first on a surface grinder then grind equal amounts of either side to the thickness I want. I find 0.010 ; 0.015" & 0.020" cover most things but now and then use one with just the "set" removed thus the standard blade thickness.

Here are a couple of photos I took tonight–more in my albums

John

[Dennis RParticipant @dennisr]

Would these little saws be of any use, page 5 in the catalogue.

http://www.morgancarbon.com/pl/files/morgancarbon-pl/martindale-motor-repair-hand-tools.pdf

Dennis

[Michael GilliganParticipant @michaelgilligan61133]

That’s a handy looking design, Dennis

But I do wonder [as with many of the commercial saws] what materials it will successfully cut.

Nigel mentioned screws for clocks, so one might reasonably assume that at least some of these will be steel.

MichaelG.

[Enough!Participant @enough]

Posted by Nigel Watts on 27/11/2019 11:40:32:

identical to a woodworker's gents saw and specifically mentions its use for slotting the heads of screws …..

The question is where to get such a saw

Lee Valley Tools sells Gent's Saws if it helps

[Allen NorrisParticipant @allennorris97892]

Thomas Flinn in Sheffield England still make Gents Saws. They are wood workers tools in the main but might be worth trying. **LINK**

For wood work they are very useful tools I have found.

Allen

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