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Nov 21, 2019 - 8:26:10 AM
217 posts since 5/1/2010

I built a rim using Siminoffs method laminating them. What does everyone use to sand the inside of the rim?

Nov 21, 2019 - 8:54:55 AM

12305 posts since 6/29/2005

I don't know what the Siminoff method is, but if you are truing the rims on a lathe after they are laminated, you would just sand the inside after it's been trued, while it's spinning, which is pretty easy.

Nov 21, 2019 - 8:58:05 AM

cbuedel

USA

217 posts since 5/1/2010

I have a lathe but, it's in storage. You think an orbital sander would work for getting inside the rim?

Nov 21, 2019 - 9:20:52 AM
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rudy

USA

14627 posts since 3/27/2004

I use a vertical oscillating drum sander to "true up" the inner walls between layers.  If you don't need to true up the vertical inside face then you can use a 5" random orbit sander.  I use 220 grit hook and loop on my random orbit 5" and control it with a foot operated momentary switch that allows me very fine control for any sanding on rims, necks, etc.

Nov 21, 2019 - 9:46:32 AM
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3625 posts since 5/12/2010

Before I had a lathe or spindle sander I made sanding blocks to fit the inside curve of the rim and sanded them smooth by hand. These were purchased rims that were already trued, just needed smoothing.

You can make such a sanding block several ways, but what I did was mold them, using automotive body filler (Bondo). A handful was placed on the inside of the rim which was first covered with plastic wrap to prevent it bonding to the wood. While the bondo was still semi soft I covered it with plastic wrap and lightly squeezed it with my hand so it would be a comfortable fit.

After the block hardened, I refined its shape a bit, and attached sandpaper using double sided tape.

Fixing up old cars was one of my hobbies over the years, and I usually had a can of the stuff handy anyway. I had once used the same method to make a form fitted sanding block while working on the inside curve below the trunk lid on 56 Chevy.

Nov 21, 2019 - 10:33:53 AM
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rudy

USA

14627 posts since 3/27/2004

Some more photos of using the foot-controlled 5" random orbit sander for banjo building tasks:


Nov 22, 2019 - 6:10:32 PM
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Helix

USA

11982 posts since 8/30/2006

I use a 2ā€ drum in my 24ā€ bench drill press. I have one 50 grit, and 100 grit

I use belt sander belts to make my own

I use the Center post as a cam and rotate the rim squarely against it

I use this with my 12ā€ drill press, too

I raise the bed under the rim, so I can see what Iā€™m doing

Nov 22, 2019 - 10:25:32 PM

cbuedel

USA

217 posts since 5/1/2010

Rudy, What brand of sander is that?

Nov 22, 2019 - 11:17:10 PM

PaulRF

Australia

3053 posts since 2/1/2012

quote:
Originally posted by cbuedel

Rudy, What brand of sander is that?


I will have a guess that it is a Black & Decker Firestorm. 

Edited by - PaulRF on 11/22/2019 23:25:29

Nov 23, 2019 - 5:52:26 AM
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rudy

USA

14627 posts since 3/27/2004

That one is indeed a B&D.  There are a few tools that I "use and abuse", random orbit 5" sanders being in that category.  I pick them up on sale so I usually have a fresh one in the wings when I decide to retire whatever's currently in use.  I've went through 3 B&Ds and I currently broke out my second Porter Cable.

This may seem excessive, but I've been "ridin' 'em hard and puttin' 'em away wet" for several years.  The B&Ds were under $20 on sale and the Porter Cables are around $30.  At those prices I can afford to toss them.

I could spend a LOT more on a sander, but using them the wy I do, such as concentrating the force on the pad edges when doing the inside of brass rings and wood rims does wear the pad edges prematurely.  Getting a couple of years of use out of a $20 or $30 sander seems like a good deal to me.

Here's the Porter Cable in my "Favorite neck shaping tools" montage:

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