SME Armboard for Triplanar

I don’t think the Triplanar can be fit to an existing SME mount as I had this mounting in my decks second position. Instead you’ll need to drill a new mount

Best to avoid drilling new holes in the SME if you can do as not to affect resale, Instead have a blank made up with countersunk holes to match the SME mount. Countersunk is important so that the bolts do not protrude above the sub plate top surface and foul the new arm. Then have the three threads for the Triplanar drilled in that. Use threads so you don’t need to bother with bolts below the surface of the new sub board. The only challenge you might have is with vertical clearance but as I’ve had an SME and a TP simultaneously mounted on my deck with this arrangement I believe it should work

Any competent machinist can make up a plate like this for you, try asking your local turntable dealer if there’s someone they use. 

You should be able to work up the technics plate, as I said just pay attention to clearing all the screws so you can get the arm base flush (let’s jusy say this is something learned through painful experience!)

@maxson. While quite well made that adapter is not suitable for a Triplanar which requires a flat surface with three holes drilled in it. What is really annoying is that I cannot find a diagram of the Triplanar mounting arrangement. The arm is supplied with a jog which is great if you are drilling yourself but not if you are specccing for a third party. As I’ve moved on to Durand arms now it’s not as if I need this but it would be helpful to be able to look it up 🤔