Getting those toolmaker quality chamfers on parts......how?

[BCRider]

Inside corners are always an issue with the sander or even a rotary tool like those air chamfer ones..... *cough*.... FILE!... *cough*.....

[J Tiers]

Inside corners are always an issue with the sander or even a rotary tool like those air chamfer ones..... *cough*.... FILE!... *cough*.....

Yah.... you can file to the tolerances needed to make those perfect edge chamfers? If so, you are clearly a throwback to the 1800s. I cannot, don't pretend to, and am not too credulous of those who claim they do. Not sure I even want to!

[PStechPaul]

That tool from AliExpress is about $58 (US). The cheaper prices are just for accessories.

[SVS]

Interesting to hear a devotee of hand scraping so derisive of hand filing.

I’m avg. at best, but tend to see champher filing as a self regulated process. As width grows, progress slows.

[J Tiers]

Interesting to hear a devotee of hand scraping so derisive of hand filing.

I’m avg. at best, but tend to see champher filing as a self regulated process. As width grows, progress slows.

Not derisive of hand filing in general. Derisive of MY abilities.. And "questioning" of others claims, pending seeing their work.

Putting a good 45 degree by 0.0625 wide chamfer on an edge, that does not have any "wiggles" when sighted along, and looks and even measures the same all around the part? Not in my skill set.

Scraping? I have a comparison reference, and all I have to do is to make my work fit the comparison reference. I consider that easier.

Could I use similar techniques to get the part to look right? Sure..... But I am pretty damn sure that is NOT how it is done on the parts I have seen.

[SVS]

A couple mechanic friends like their pneumatic band files for general use.

Maybe already mentioned? Haven’t followed the links above.

Faster but no more precise than a file unless a guide can be incorporated.

[ezduzit]

This is what I have. Beveling machine, made in Germany.

[SVS]

Electrlc is also available.

[MichaelP]

I don't know about other die shops, but ours had a 12 inch disc sander with the table set at 45 degrees ( Downward )
and a 1/2 drill rod horizontal about 3/4" above the table , so when you lay a block on the table, you get a perfect 45 degree chamfer at about .060"
You can get the corners too
Rich

I am trying to visualize the position of the drill rod and the way it's attached to the machine to provide no interference with the X-axis movement of the workpiece being chamfered.

The best I can imagine (maybe, erroneously) the rod should be positioned above and parallel to the gap between the disk and the table to serve as a stop. In this case, about the only way to attach the rod to the machine will be to make it П-shape to straddle the wheel and attach it somewhere behind the wheel. Although a sketch would be ideal, maybe you can try confirming or clarifying it a bit more? Thank you.

[MichaelP]

This is what I have. Beveling machine, made in Germany.

A couple of questions, if you don't mind.
What's the min thickness of sheet/plate it will reliably chamfer (so that the bearing provided support along the edge being chamfered)?
Do you use common inserts (vs.proprietary)? If so, which ones?
Thank you.

[The Metal Butcher]

Not derisive of hand filing in general. Derisive of MY abilities.. And "questioning" of others claims, pending seeing their work.

Putting a good 45 degree by 0.0625 wide chamfer on an edge, that does not have any "wiggles" when sighted along, and looks and even measures the same all around the part? Not in my skill set.

Scraping? I have a comparison reference, and all I have to do is to make my work fit the comparison reference. I consider that easier.

Could I use similar techniques to get the part to look right? Sure..... But I am pretty damn sure that is NOT how it is done on the parts I have seen.

Perhaps you care too much?

[JRouche]

A couple of questions, if you don't mind.
What's the min thickness of sheet/plate it will reliably chamfer (so that the bearing provided support along the edge being chamfered)?
Do you use common inserts (vs.proprietary)? If so, which ones?
Thank you.

No, not really. You can use junk, You dont have to, JR

[luthor]

I agree that nice crisp chamfers really add the finishing touch. I made these gang toolholders for my small CNC lathe and at first tried doing the chamfer with a 45 degree cutter but found that it was better just to use nice sharp single cut files of various sizes employing the draw filing method where possible.


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[ezduzit]

A couple of questions, if you don't mind.
What's the min thickness of sheet/plate it will reliably chamfer (so that the bearing provided support along the edge being chamfered)?
Do you use common inserts (vs.proprietary)? If so, which ones?
Thank you.

This is not for sheet metal. You want to keep at least 1/16" engaged on the bearing follower. I haven't used it enough to need carbide cutter replacement, but I believe they are proprietary (3-flute).

[Fasturn]

About 80% done with this. Files, scrapers, mop on Dremel tool and 180 paper for the rest.