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westhemann

HUGE sanding disc

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hey i was thinking today and i think it would be a simple process for me to build a benchtop disc sander large enough to sand a complete guitar body..i think about a 48" diameter would be cool,but a 30" would probably suffice.

but where would you get the sandpaper to glue to it?

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Maybe stick a few sheets together? Make sure they don't overlap but I'm sure there's some arrangement that would allow for even sanding.

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Problem is speed - if you've used a disc sander you'll have noticed that the edges cut much faster than the center - they travel faster. A bigger disc would make this exponentially worse - a guitar sized sanding disc would cut faster at the edges, and tend to round the surface of the guitar. Also, a disc with that much surface area would be very easy to stall - unless you beefed up the motor, which would leave you with a new problem of how to hold onto the guitar!

In all my time looking at guitar building and woodwork sites, I've never seen a super-sized sanding disc, and I'm sure there is a reason - IMO you'd do much better to invest your time in making a drum sander.

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I know they make 8" and 12" belt sanders for the glass industry to bevel the edge's. They are variable speed as well.

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yeah canuck,that's what i am talking about.

i figured about a 3 hp electric motor

the reason i want it so large is so that i could put the support table up a little more than halfway so you wouldn't get the grabbing effect you get around the center

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Ok, I assumed you meant to sand the whole face or back of the guitar. :D

However, I don't see the advantages of a bigger sander if it's just for sanding the edges of the body - Most guitars are curved, so you rarely need to sand large flat areas on the sides. On the rare occasions that you do, a belt sander is much better suited since it sands with the grain, and doesn't create crossgrain scratches. As far as I can see the only real difference with a mega-sized sanding disc is you need bigger bits of sandpaper, and it takes up more room!

Eitherway, I'd be interested to hear if it works out...

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Been watchin reruns of Home Improvement have you?

Arh Arh Arh!

i knew that's exactly what you were going to say before i even looked at what you wrote brian! :D

but i agree

ARH ARH ARH!!!

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