PM2244 problem

[estesbubba]

I put new paper in mine and when it hit small swirly grain in cherry it burned and gummed up the paper. The crepe block removed most of it but the paper isn't as good in that area. 

[Eric.]

If I use nothing finer than 120 and I don't get greedy, I don't have burning issues unless I try to sand a big panel of something stupid dense like bubinga.  Domestics go off without a hitch unless the paper is getting old.  Appropriate grit and very light passes are the key.

[gee-dub]

I run a wide range of grits.  I find that the finer the grit the lighter the cut and faster the feed rate required to avoid burning or build-up.  The paper I use can be dropped in the sink and scrubbed with a wire brush to get the tough stuff off.  I hang the strip over a dowel and spring clamp a weight to each end while it dries.  This greatly extends my useful life of the paper but, remember that abrasives are a wear part like brakes on a car.  No matter how long they last there comes a point of diminishing returns. 

[wdwerker]

Knots, sap streaks and pockets ( cherry esp. ) and bark inclusions all have the tendency to load the abrasive with resin and cause a burn. Running a board at a diagonal angle will spread the resin over a larger width , but sometimes you have to clean quite frequently. Very light passes, medium feed rate and constant vigilance is nessasary. At the first sign of a burn turn the drum off but leave the conveyor running or the drum can dig a groove across the entire board.