I've been making my own trammels for years but now that I'm working in my living room I bought the Jasper. What a pleasure to use! Just stick the pin in to the nearest 1/16 and go. Excellent.Borrowed a brand new P-C 2 H.P. plunger model 7529 to use with the Jasper. What a piece of junk! Sure the housings metal; cheap rough castings; the depth stop turret is a kludge, the fine adjustment looks like it would last a week; and so forth.
For over thirty years all my tools have been Porter-Cable. No more.
I'm getting a Freund FT 2000. Poweful ergonomic beauty, $30 less.