KR76 Posted November 10, 2020 Report Share Posted November 10, 2020 Hello! I teach high school ceramics, with about 50-65 students per semester. I also teach advanced ceramics (wheel throwing) to about 10-15 students per semester. I use plastic bats that are textured on one side and smooth on the other. We have always used the rough sides, but after many years of use, they have worn down and now have smooth rings/cirlcle on each one. I want to keep using them and don't really want to purchase new ones, but students have a hard time centering on the slick centers. I have already tried to roughen one up by sanding the center with 60 grit sandpaper, but it does not seem to help much. Does anyone have any suggestion on how to resurface these? (Wood/masonite bats are not a good option for our set up.) Or suggestions in general? Thanks! -10 years teaching... and still learning! Link to comment Share on other sites More sharing options...
neilestrick Posted November 10, 2020 Report Share Posted November 10, 2020 If sanding doesn't work, then it may be time to replace them. The only thing I can think of is to take a box knife and cut a whole bunch of fine lines in them. The problem with that is that the results may be too rough and be abrasive on hands. Maybe hit it lightly with a torch to soften the cut edges? Might warp the bats, though. Tough call. I think any successful method will be terribly labor intensive. Link to comment Share on other sites More sharing options...
liambesaw Posted November 10, 2020 Report Share Posted November 10, 2020 Don't get them wet before putting the ball of clay on and it should be fine. I have some very smooth bats and this works a treat. In school we were taught to wet the wheel before putting clay on, in my personal life I have not found this to be good. Link to comment Share on other sites More sharing options...
Mark C. Posted November 11, 2020 Report Share Posted November 11, 2020 8 hours ago, liambesaw said: Don't get them wet before putting the ball of clay on and it should be fine. I have some very smooth bats and this works a treat. In school we were taught to wet the wheel before putting clay on, in my personal life I have not found this to be good. Yes smooth is fine If you want bought put one on the wheel head at vey slow speed use an 60 grit pad on an orbital sander at slow speed and round it up at low RPM. This will work you can aways go to 40 grit but I feel it will tear it up. Link to comment Share on other sites More sharing options...
Hulk Posted November 11, 2020 Report Share Posted November 11, 2020 Agreed that wet doesn't help, however, very slightly damp can be ok - where the dry forearm skin drags/grabs again't, and does not slide inna wet. I have one speedball bat, which I found too slick; scoring grooves ~3/16" apart with a box cutter (aka utility knife) helped - just out to about two inches, so not to interfere with fingers and other tools, definitely helped, and did not take but a few seconds (for just the one, granted). From there, touched it with a torch a bit too much by accident ("ooops" ...did me mention I don't particularly like the bat?), that helped too - just a bit o' texture there now, just in the middle. I do like my map gas torch, use it just about every day - setting a bit too damp piece so it can be trimmed now, stiffening a piece before just one more stretch/blow out, hurrying up some handles, smoking off the too damp on a wet bat... Some ready to go clay right out the bag I find a touch too stiff/dry; that stuff doesn't stick to a dry bat nearly as well as "properly" softened clay, imo. Link to comment Share on other sites More sharing options...
oldlady Posted November 11, 2020 Report Share Posted November 11, 2020 never used the rough side. just use the smooth side with less water as suggested. FIRMLY press the clay down, i use a whammer-dammer, a 4x4 cut down with a handle trimmed from the center of it. Link to comment Share on other sites More sharing options...
Bill Kielb Posted November 11, 2020 Report Share Posted November 11, 2020 Very lightly wet anything that can draw the water out of the clay. Smooth plastic batts, no water needed. Regular clay should stick like glue to a smooth non porous surface. Folks over wetting is a common issue though. Have them place the clay on the wheel, throw or pat in place. Without water seal the lower edge of the clay to the wheel with a finger and couple wheel rotations. Now, no water can get underneath and no flying clay in the classroom. Link to comment Share on other sites More sharing options...
Chilly Posted November 11, 2020 Report Share Posted November 11, 2020 11 hours ago, oldlady said: whammer-dammer, Link to comment Share on other sites More sharing options...
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