Two questions if I may.......

1) I remember reading a thread where someone mentioned that David Marks uses butchers wax for his torsion box. This is to prevent glue from sticking to the surface I assume? What is butchers wax and where does someone get it? Is there a better product to use for the MDF surface of a torsion to prevent glue, liquids and other stuff from damaging the top?


2) I attached a set-up to my Kreg K3 for the dust collection. I used an adaptor to go from 1 1/4" to 2 1/2" for my shop vac. When I hook up my shop vac while it is running, the pitch of the motor goes way up (smaller opening + tiny holes in the jig = restricted air flow, as you folks are well aware). Do I need to add an attachment to let more air in so as not to burn up my vac? Or will the vac be ok? BTW, 8 year old Ridgid 4.25 hp, 12 gallon shop vac.

Before I had the adaptor hooked up I used my house vac, a Hoover upright, and attached the accessory hose. I know that the Hoover doesn't move a ton of air so it must not take too much to suck up the drill shavings from the pocket holes. Any advice?

Thanks very much for your help.