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Arrg - what is the secret?


JimErn

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There is an old cowboy  saying, "be quick to help, and slow to ask for it", but here  I am.

 

What is the secret to getting the drum sleeve on the drill drum sanding attachment ( see pic for I am talking about)

 

I have
1. removed the mounting (squeeze screw) and rolled the rubber under pressure 

2. after doing #1, I sprayed the rubber with dry silicone lube

3. I froze the rubber (well it works to put a steel gear on machined shaft)

 

and all I can get is the sleeve about 3/4 of the way on the rubber.

 

Jim

post-29054-0-65810000-1478952166_thumb.jpg

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There is an old cowboy  saying, "be quick to help, and slow to ask for it", but here  I am.

 

What is the secret to getting the drum sleeve on the drill drum sanding attachment ( see pic for I am talking about)

 

I have

1. removed the mounting (squeeze screw) and rolled the rubber under pressure 

2. after doing #1, I sprayed the rubber with dry silicone lube

3. I froze the rubber (well it works to put a steel gear on machined shaft)

 

and all I can get is the sleeve about 3/4 of the way on the rubber.

 

Jim

I have that problem with my dremil drum sander.

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The best way to sand the rubber down a bit is if you had a lathe. Then you will sand evenly. If you do not the sleeve can have a flat spot. Sticking it in the freezer for about 15 minutes is a good way but if you keep changing grits that can be a pain. There are times those sleeves have a burr on the edges. May help to take a piece of sandpaper and sand the edges some to give it a cone shape somewhat. 

 

The only time I use a drum sander like that is on my industrial drum sander and the rubber drums are slightly smaller and they always rely on the squeezing from the plate put on top and tightening the nut. 

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I had to google that one.

The pics on the net seem to show the same concept for changing sizes or grits, so I not sure what the advantage is?

As I posted in my response i too use a spindle sander or basically a larger drum sander. The sanding drums require you to use a plate and a nut to squeeze the drum so it snugs against the sleeve. They are always smaller in diameter than the sleeve so you change grits easier. With each size drum come with the proper end plates so it is always proportioned to that drum. They are more industrial and better quality. That is the difference. 

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You shouldn't be using any kind of lubricant, to get the sleeve over the drum. It might help to get the sleeve on the drum, but, there's just as much of a chance it will make removing the sleeve impossible. If it was mine, I would sand the drum just a bit. Try heating the sleeve and freezing the drum, that might make a big enough difference for it to work.

Len

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SOLVED

 

After long arduous hours and hours of experimentation.  {well it sounds good}

 

Put the arbor in your drill press, and hold 400 grit sandpaper on it as it spins, sand the rubber down in stages, loosen the holding screw and at some point he paper drum just barely slides on the arbor and will tighten right up.

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