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Widebelt: sand with drum only?


I have a 37" SCMI single head widebelt and was wondering if different shops sand with drum only for main material removal and then use platen for last pass or? Replacing my platen felt and graphite is $420.00 just for the parts so I don't want to use the platen unless needed. I build mostly stile & rail doors and sash.Your thoughts please.

3/31/14       #2: Widebelt: sand with drum only? ...
the google

gary - i'd recommend getting a second opinion with your platen felt and graphite replacement. i had left over graphite but i had mine done by our local scmi tech for +/- $90 about five months ago. same sander.

3/31/14       #3: Widebelt: sand with drum only? ...

Great suggestion; I wanted to keep all parts original but will look for alternative next time. Thank you

3/31/14       #4: Widebelt: sand with drum only? ...
Adam West  Member


I think this article I wrote will help tremendously. It also goes over how to set the platen in relation to the drum for maximum platen life and best results.

ultimate primer on single head wide belt

4/1/14       #5: Widebelt: sand with drum only? ...

Adam, great read! However, unless I'm more blind at 63 than I thought - I did not see any notes on how to set the platen relative to the drum. What am I missing?

4/1/14       #6: Widebelt: sand with drum only? ...

Okay, now I see - there's a link at the end of your post that takes you to another page that covers the platen. Thanks!

4/1/14       #7: Widebelt: sand with drum only? ...

We have a Powermatic RB37 and just replaced ours. Total tab was about $90 and took 20 minutes to pull the platen out, clean it, adhere felt, and install the graphite. Pressed Wool felt is typically the product. Try Sutherland felt company. Klingspor sells the graphite rolls at about $20.

4/1/14       #8: Widebelt: sand with drum only? ...
Adam West  Member


F1 pressed felt is a standard for older timesavers.

I like medium density rock hard for SCM machines.

The felt can be dressed by stripping down the platen so it will ride flat on the conveyor belt. I gently sand it with an 80 grit belt, reversing directions often. Just enough to get rid of dings or slight damage in the felt.

4/2/14       #9: Widebelt: sand with drum only? ...

Thank you Brad for the felt source. Could I trouble you for the specs of the felt? Which felt did you purchase and does it have a number ? I found Sutherland but not sure which felt .
Thanks again

4/2/14       #10: Widebelt: sand with drum only? ...
Adam West

Be sure to buy the same thickness as you were using. The heads do not always have enough travel to adapt to different thickness felt.

4/2/14       #11: Widebelt: sand with drum only? ...
Brad Member

F-1 pressed wool is standard for this type of application. Just take your old one out and measure the exact width and thickness. They sell these in 5' lengths minimum and you'll have to buy 2 to place an order. Adam is right to make sure you get the right thickness. The adjustment for the platen height has a limited range. (On our machine). Good luck!

4/9/14       #13: Widebelt: sand with drum only? ...
Rick L  Member

Process Engineering is the best source of graphite period. I get #1 firm white felt from McMaster Carr and abrasives from I think it's fine to use the platen at the end of the run to preserve the integrity of the platen.

Process Engineering

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