At last, I've finally built a Super Sled. I used 3/4" ply for the base, UHMV plastic for the runners, and cherry with black walnut plugs for the fence, handle, rear support, miter attachments and miter attachment stop blocks. I opted to recess T-track into the rear fence for mounting a flip stop I picked up from Rockler. I still need to build an extension flip stop for the miter attachments but I'll leave that for when it's actually needed. For now I'll primarily be using the sled for cross cutting. In fact I already have when making the last set of cutting boards and it was a blast. I suspect between my new drill press table with fence and the cross cut sled I'll see my accuracy, repeatable, and overally safety go way up. Regarding safety, you'll notice I decided to push the sled all the way forward once so the saw went through the handle in the full raised position. While using the sled this should never occur, but in case I ever get distracted I'm hoping that slit in the back will keep my aware of the danger zone. So long as I use the actual handle I should be in excellent shape.