Don here is some pics of the bamboo flooring sleds cheap to make and no double back tape needed some guys use skate board sand paper but I have never found it necessary with wood lams , curved horn lams I use it but I just hold the lam with my fingers tell 1/4 way threw and they stay put by not using any thing between the lam and sled you get a more accurate grind on you lams flipping and rotating every other pass or so & taking off small amounts helps precision too !