wtnhighlander Posted December 29, 2021 Report Share Posted December 29, 2021 Looking for suggestions for sanding smaller concave surfaces, such as might be found in a sculpted piece. I'm open to purchase or construct, but what I have for motive power is limited to a drill, a dremel, or an oscillating multi-tool. Spherical, semi-spherical, or mop-style sanders would be better than a wherl or disc. Need to get down to a couple of inches in diameter, at least. Ideas, anyone? Quote Link to comment Share on other sites More sharing options...
gee-dub Posted December 29, 2021 Report Share Posted December 29, 2021 If I am targeting your description well . . . I have had good success with these. https://tinyurl.com/2xk9n75y https://www.amazon.com/Dremel-511E-Coarse-Finishing-Abrasive/dp/B000FBF3OM I also use "new wave" discs and pads of various sizes and densities: https://tinyurl.com/4eyvzeep https://www.ptreeusa.com/abrasive_bowl_sanding.html For fixed profiles I use contour sanding pads. I just ordered some more as I managed to lose a couple While Standing At The Bench!?! 1 Quote Link to comment Share on other sites More sharing options...
Mark J Posted December 29, 2021 Report Share Posted December 29, 2021 All of gee-dub's suggestions are good considerations. I think the Dremel "buffs" work better than the "brushes", but both may be small for your needs.. For something bigger Klingspor sells non-woven abrasive scuff & buff balls that are 2" in diameter that take a 1/4" chuck. https://www.woodworkingshop.com/product/bb90202/ They have an assortment of other flap sanders, etc., as well. FWW had a tip recently, too. Wrap sandpaper around a socket (or other cylinder) of the right diameter. 1 Quote Link to comment Share on other sites More sharing options...
wtnhighlander Posted December 29, 2021 Author Report Share Posted December 29, 2021 Thanks guys, these look likegood options. @Mark J, do those buff balls get aggressive enough to remove scratches down in the 40 grit range? I'm 'power carving' some bowls / dishes with an angle grinder, and the issue for now is that my ROS diameter is larger than the grinder disk, limiting the practical radius of the hollows I can make. This country boy ain't about to start hand-sanding these things! Quote Link to comment Share on other sites More sharing options...
Mark J Posted December 29, 2021 Report Share Posted December 29, 2021 22 minutes ago, wtnhighlander said: This country boy ain't about to start hand-sanding these things! LOL. I have never used the the Klingspor balls, but I have used the smaller Dremel ones. Because it's motor driven a given grit is more effective than you'd think. I would still start with the coarsest and work up. The non-woven material wears away under use, so there's a natural "discard" point. 1 Quote Link to comment Share on other sites More sharing options...
Mark J Posted December 29, 2021 Report Share Posted December 29, 2021 Do you have a flex shaft accessory for your drill? Quote Link to comment Share on other sites More sharing options...
BonPacific Posted December 29, 2021 Report Share Posted December 29, 2021 I've used a drill-mounted paint stripper pad for rough smoothing before. Sometimes I'll chuck it into my drill-press to clean up an interior bandsaw cut before going to the spindle sander to save time. Might be a good first pass after the grinder before getting into the smaller dremel sanding tools. https://www.amazon.com/3M-7772ES-Paint-Rust-Stripper/dp/B002E9IQ9M/ref=psdc_228914_t1_B000BQT4UK 1 Quote Link to comment Share on other sites More sharing options...
gee-dub Posted December 29, 2021 Report Share Posted December 29, 2021 Coming off an angle grinder you may find burrs to be the next step between grinder (Arbor tech or the like) and abrasives. Single cuts are faster but leave a rougher surface. Double cut burrs are kind of like powered files ;-) These are small ones but they come in a really wide variety. Unless your bowls involve a small radii undercut lip or base a pear shape offers a really wide range of use. HTH 1 1 Quote Link to comment Share on other sites More sharing options...
wtnhighlander Posted December 29, 2021 Author Report Share Posted December 29, 2021 6 hours ago, Mark J said: Do you have a flex shaft accessory for your drill? Not yet.... Quote Link to comment Share on other sites More sharing options...
Mark J Posted February 1, 2022 Report Share Posted February 1, 2022 @wtnhighlander, did you ever try those sanding balls from Klingspor? I'm thinking I might give them a whirl myself. 1 Quote Link to comment Share on other sites More sharing options...
wtnhighlander Posted February 1, 2022 Author Report Share Posted February 1, 2022 @Mark J, I have not, yet. Closest thing I've used are some spherical non-woven abrasive pads (aka Scotchbrite). They polish well, but don't remove much material. Quote Link to comment Share on other sites More sharing options...
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