It will probably help. A lot of times it depends a lot on the wood. Softer woods bleed is just kinda a fact of life that requires sanding. One way I go about it is to put the wood in for roughly the amount of time it will take to bake the clay. Then put it in a second time with the clay actually in the piece. This helps get the wood to emc at that temperature. I don't use polymer to much any more with my turnings. I use CA glue and embossing powder, it requires more sanding and takes some time but I get better results. There are tons of inlay techniques, and I have tried a lot of them LOL.