Looking for where to start with grits for a wide belt, i bought a used scmi sandya win cs63 24¡±. Delivery was supposed to be tomorrow but they found that they need to replace the conveyor belt so it will be another week or two.
It has a steel contact drum and a platen, my typical final grit is 180, hand sand.
I have 2 use cases
1. Re-sawn hardwood ~3/32, one side will be jointed the other bandsaw which will then be pressed on BB.
2. Hardwood parts?
After all the reading and research I came to the conclusion that for the resawn to start at 80 or 100 then 120 cloth no platen then 180 paper backed with the platen then quick RO 180 or just hand sand after assembly.
But then i talked to a tech at Klingspor and he said no platen start with 120 cloth with the re sawn and then go straight to 180 RO. If the 120 isn¡¯t adequate then 100>120>RO180
For general hardwood pcs off the helical 120 cloth then RO180
So for all cases no platen, i thought there was a benefit to using the platen and he said do not use the platen with any cloth belt only paper, and really only at higher grits for sanding sealer for example
I would also like to eliminate the RO and just do a light hand sand but the tech told me not to because the straight line sanding from the widebelt will reveal itself over a week or less from expansion contraction.His recommendation was 100,120,and if i really wanted 180 all cloth and he also said open coat, I thought that with hardwood you would want closed but he said he recommends open coat on the 100 and 120 because the belt will run cooler and last longer and the closed will run hotter and be more aggressive?
Any comments appreciated, sorry for the long post
