That's what I meant really. Start again with a grit at least as coarse as the scratches.Dieseldog":3tdvkv85 said:
Mike Wingate":73wf1mhu said:Rotary sanding pad on an electric drill with both spinning fast.
CHJ":1nz5o2nw said:As the marks look like torn/pulled grain as much as scratches I would soak the piece in sanding sealer to swell the wood cells and support the surface before, as said above, sanding back through the grits.
Yes that is the primary function, but it also has the effect of hardening the surface and the solvent moisture swells the grain slightly prior to it hardening, the principle is extensively used on softer or spalted timbers.Davidf":3s2a1vdz said:CHJ":3s2a1vdz said:As the marks look like torn/pulled grain as much as scratches I would soak the piece in sanding sealer to swell the wood cells and support the surface before, as said above, sanding back through the grits.
I ve got some confusion on that; a supplier I just called said sanding sealer does just that, it seals the grain for AFTER sanding and before waxing.
Utter nonsense, the loads applied to the headstock bearings during normal bowl turning operations are several orders of magnitude greater than any loads you could apply using a sanding disk. The only loads you can apply are those resulting from your arm/hand strength.Davidf":3s2a1vdz said:He didn't want to me supply me with a drill bit sander either, saying they don't do the lathe bearings any good. I can see that, as you are applying (as he said) he side ways pressure onto work.
paulm":li6576wh said:Change your supplier David as they don't sound like they know anything about woodturning !
Follow Chas's or the other good advice here. Soaking in sanding sealer first and letting it dry (only takes a few minutes) stiffens the soft wood fibres that are causing the problem and allows them to be sanded off more effectively than when they are soft and fluffy.Other than that yes, it's used as a base on bare wood before waxing.
Don't think you will need a sanding arbour and discs for this, but they certainly wouldn't damage lathe bearings !
Try Axminster Power Tools, Toolpost, Peter Childs or similar suppliers that will have all the right stuff and should give you the right advice too, or ask away here of course, plenty of knowledgeable people who will be happy to help