anyone tried Anderson levelers? new to TT, learning all I cn

I made a set from a length of 2" x 6". I cut it into multiple pieces equal to the finished length of the leveler. Then I cut each piece on a band saw making the appropriate curve top and and bottom. Finally I glued several pieces together to get the finished width. Using the same technique I made the small curved wedges that fit under the tapered end. They work great and cost almost nothing.