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Old 03-30-2014, 02:31 PM
johnyradio johnyradio is offline
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Default Stencil that Won't Dull Blades?

hi,

Question: i need a negative cutting stencil that won't dull my blade. Any thoughts?

i'm cutting sheet aluminum with a spiral blade mounted on a jeweler's or coping saw. Images below.

Are there metals that won't cut easily, but won't dull the blade either? I guess the stencil only needs to be harder than the workpiece, right?

I was thinking of using a hardwood stencil instead of metal.

Pics of the tool and workpiece are attached.
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Last edited by johnyradio; 03-30-2014 at 06:50 PM. Reason: remove embedded images; upload attachments
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Old 03-30-2014, 06:20 PM
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I thought we had covered this before, Johny.
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Old 03-30-2014, 06:44 PM
johnyradio johnyradio is offline
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Oops! Sorry for the embedded images. You'd think I could remember! Thank you for attaching them. At least I did not use off-site hosting.
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Old 03-30-2014, 08:53 PM
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Quote:
Originally Posted by johnyradio View Post
hi,

Question: i need a negative cutting stencil that won't dull my blade. Any thoughts?


Are there metals that won't cut easily, but won't dull the blade either? I guess the stencil only needs to be harder than the workpiece, right?

Pics of the tool and workpiece are attached.
Nothing within reason.

Looking at your picture you need too try one of the nibblers we talked about.
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Old 03-30-2014, 10:28 PM
johnyradio johnyradio is offline
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While i appreciate your feedback related to a different thread, i'd appreciate feedback here related to the question in this OP. I welcome your comments about that other thread in the other thread.

thx
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Old 03-31-2014, 03:05 PM
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JR, is this some sort of exercise into/for print making?

Not knowing exactly what your doing, or possibly my thoughts on the subject may be hampered by my local definitions of the process.

LW
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Old 03-31-2014, 03:08 PM
johnyradio johnyradio is offline
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Quote:
Originally Posted by LW Hiway View Post
JR, is this some sort of exercise into/for print making?
no, this is a stencil for cutting sheet aluminum.

-thx!
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Old 03-31-2014, 05:26 PM
Samcord Samcord is offline
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Originally Posted by johnyradio View Post
While i appreciate your feedback related to a different thread, i'd appreciate feedback here related to the question in this OP. I welcome your comments about that other thread in the other thread. thx
Most of us on this forum seem to employ silent filters, and simply ignore comments that we don't find useful.

Interesting things can come from the creative process of spitballing.
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Old 03-31-2014, 08:18 PM
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Quote:
Originally Posted by johnyradio View Post
no, this is a stencil for cutting sheet aluminum.

-thx!
I think we call them Greenlee chassis punches Lw, same idea.
I think you said it first, the stencil/die needs to be harder than mild steel for sure. I would caseharden it, and check the edge, aluminum has funny habits of attaching itself to cutting edges. I guess that would be a male part, and you haven't said what you are using now for the other side.....phenolic board?

Ignore this, I figured out after I relooked at the pics, you are using a coping saw to cut the holes.
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Last edited by Ironman; 03-31-2014 at 08:23 PM.
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Old 03-31-2014, 08:39 PM
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SAM,
Nicely Done
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