This is somewhat on the trivial side but it may provide someone with an idea or two.

I like using Scotch-Brite wheels from everything to relatively safe removal of shallow rust to small burr removal and brush finishing metals, and go through one of these wheels about every 18 months or so. I have been using 8" 5 fold wheels from Abrasiflex that are around 25mm thick but have always wanted to get something thicker to cover a wider area or material exposed to the wheel.

I looked around on-line and found a mob called AB tools on ebay in the hUK were having a sale on their 4 fold 25 mm thick wheels so I thought I would buy two of them and see if I could put them together.

The wheels hubs use 3 thick leather washers, one each on the outside and one in the middle for added grip of the tapered shaft, all held together by 4 long nails.
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The other side looked like this after I had folded out the ends of the nails out with multi grip .
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I drilled out the holes in the middle of 4 of the now 5 leather washers (one between each pair) to 12, 14, 16 and 18 mm so they could better bind ono the tapered spindle.
Then I just bolted them together with some 4 x 50 mm long bolts.
The mops don't exactly line up but it won't take too long for then to wear into place.
I thought the out of alignment mops might add a bit of vibe but it seems no different to the remains of the old 5 fold Abrasiflex wheel that I was using.

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