Stoning a part

[Usmc0844spare]

I've got a stamped metal part (Buckmark disconnector). The edges that interact with the frame are a little stampy. I'd like to kill those edges somehow. I don't want to attack with a file and have it come out like it went through a wood chipper.

Everyone says "stone the part". I don't have any "for purpose" stones.

I DO have one of those 2-sided knife sharpening stones that came with a pocketknife. Is THAT sufficient for a one-time use kinda deal, or should I buy something for purpose? And if so, what?

[john323]

The hard surface stone will work. Use plenty of oil.

[Citadelgrad87]

I have seen fine sandpaper on a sheet of glass when "true" removal is needed, but it depends on the part, it won't work for certain shapes.

[Usmc0844spare]

I have seen fine sandpaper on a sheet of glass when "true" removal is needed, but it depends on the part, it won't work for certain shapes.

Nothing complex, just these edges.

[hermosabeach]

I have an old piece of glass that came from a small bathroom shelf... 3/8" thick tempered glass

Add some water to it and set down your favorite sandpaper...

now you have a nice flat surface and any abrasive you want...

Auto body sand paper gets fairly fine for polishing too


sandpaper example

https://www.amazon.com/dp/B08NPM9B5L?ref_=cm_sw_r_cp_ud_dp_SQKHK1A08QY6VRFNCB9A

glass example

https://www.amazon.com/Bathroom-Organizer-Rectangular-Floating-Transparent/dp/B09V7ZWMGV/ref=sr_1_5?crid=32L9NDCOSX2H2&dib=eyJ2IjoiMSJ9.lsY6x-fRpnnco5jy1MU2KnF25NRU_UOXZpR2dwe10VEnO4rBHspybIfzdQQ3z7ArwzLZsvsPdblmfsg3rDkChA.G7o_4Hcmy8KGw01y0E80OLLoJuvyk2rCBkTGBptfegA&dib_tag=se&keywords=glass%2Bshelf&qid=1704919216&sprefix=glass%2Bshel%2Caps%2C146&sr=8-5&th=1

https://www.homedepot.com/p/inPlace-18-in-W-x-3-25-in-D-x-2-6-in-H-Clear-Glass-Bracketed-Wall-Shelf-0191832/204766508

[divingin]

Hermosa's special tools aside, you can do much the same thing with your dining room table (or a cutting board in good shape), and a screwdriver wrapped with fine wet/dry sandpaper with a bit of oil. You're talking about a piece that transfers movement by sliding rather than a piece whose surfaces mate with another part (like a hammer and sear.) Don't overthink it.

[ar15barrels]

Hermosa's special tools aside, you can do much the same thing with your dining room table (or a cutting board in good shape), and a screwdriver wrapped with fine wet/dry sandpaper with a bit of oil. You're talking about a piece that transfers movement by sliding rather than a piece whose surfaces mate with another part (like a hammer and sear.) Don't overthink it.

^^^This^^^

If you look at how the disconnector sits in the frame and what it actually interacts with, only a few points of it actually do anything.
The ragged stamped edges are mostly floating in open space.
Only the points that actually slide on another part under tension need to be smooth.

[Usmc0844spare]

^^^This^^^

If you look at how the disconnector sits in the frame and what it actually interacts with, only a few points of it actually do anything.
The ragged stamped edges are mostly floating in open space.
Only the points that actually slide on another part under tension need to be smooth.

I realized that most of the roughness was along the outside perimeter of the part and didn't worry about that. There was a little "feel-detectable" stuff on the inside face of it.

Ended up double-sided taping the knife sharpening stone to the workbench and giving a few strategic swipes, took about a minute. Can't feel anything now.

[ar15barrels]

I realized that most of the roughness was along the outside perimeter of the part and didn't worry about that. There was a little "feel-detectable" stuff on the inside face of it.

That's exactly the stuff to go after.
With the part part laying flat on the stone, knock off whatever sticks up or down as those are the faces that lay against the frame and against the grip.

[Usmc0844spare]

That's exactly the stuff to go after.
With the part part laying flat on the stone, knock off whatever sticks up or down as those are the faces that lay against the frame and against the grip.

Yeah I think I mostly took off parkerizing (or whatever the black coating is) but saw a bit of silver in the stone as well.

Little challenging since the part is slightly bowed from the stamping process.

Did I really accomplish anything other than feel better about it? Who knows.

[ar15barrels]

Yeah I think I mostly took off parkerizing (or whatever the black coating is) but saw a bit of silver in the stone as well.

Little challenging since the part is slightly bowed from the stamping process.

Did I really accomplish anything other than feel better about it? Who knows.

If there were no drag marks on the frame or the grip panel from the spots on the trigger bar you deburred, then you likely did not change anything.
If there WERE drag marks and the part no longer drags, then you will see some benefit.

[PistolPete75]

If there were no drag marks on the frame or the grip panel from the spots on the trigger bar you deburred, then you likely did not change anything.
If there WERE drag marks and the part no longer drags, then you will see some benefit.

You are alive! 56k posts and still going strong! You are not in Culver City anymore?

[ar15barrels]

You are alive! 56k posts and still going strong! You are not in Culver City anymore?

I am in Van Nuys now.
Much bigger shop and closer to Angeles Range.