I revently bought a sew steady table insert for the sewing desk my brother made for me.
On their website it says:
Q: What should I clean my table with?
A: We recommend using Turtle Wax Paste ONLY. We have not tested other products. Use a soft micro fiber towel or soft cloth that does not have any fabric softener or anything that will leave residue and buff until the table is smooth. This works real well and will get the table nice and polished allowing the fabric to slide easily.