"graining" aluminum top plates?

Jim R. · 2606

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Offline Jim R.

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on: June 11, 2016, 03:07:20 PM
How does one go about putting a nice "grained" texture on an aluminum plate? I'm talking about the graining that used to be on the. older BH kits -- not the new pattern that is now used.

I want to do some kind of decent looking grain on a top plate for my s.e.x. amp (oversize top plate) before I do the transparent copper powdercoat. I could polish it, but that would cost me as I really can't do a good job of that myself.

Also, dumb question, but did the grain run left-to-right, or front-to-back?

Any help is much appreciated.

Thanks,

Jim

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)


Offline Doc B.

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Reply #1 on: June 11, 2016, 04:44:32 PM
That kind of graining is done with a large flat bed belt sander.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Brent

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Reply #2 on: June 11, 2016, 05:51:06 PM
I've gotten similar effect on stainless steel by hand with sandpaper and a block. Unfortunately, I have no recollection of the grits used. Direction of grain is side to side on my late 2000 s SEX 2.0.
« Last Edit: June 12, 2016, 01:56:39 AM by Brent »



Offline mcandmar

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Reply #3 on: June 11, 2016, 11:40:36 PM
I created a brushed looked on the chokes for my S.E.X. amp the same way, sand in straight lines, and only in one direction. Think i used ~800grit emery paper.

M.McCandless


Offline Jim R.

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Reply #4 on: June 12, 2016, 03:25:17 AM
Thanks all,

I think I have the perfect tool -- I've made a couple of large sanding blocks using sheets of sandpaper cut from time saver belts. Now I just have to find them :-).

Thanks,

Jim

P.S. -- I think I remember something like 320 grit was used, and I think I have a time saver belt in 320 grit.

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)