Not really needing yet another needle-cutter, my ERC TimSav machine had been pushed to the side while I addressed a couple of other projects. But then the stars aligned and my SIL said he'd taken on a job where he needed to cut larger, thicker pieces of foam. So, with a couple of hot-wire designs I'd seen in mind, I decided that TWO TimSav's could be better than one, and... voila! TimSavX2 Hotwire foam cutting machine... a work in progress.
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Since it is so closely related to ERC TimSav motion system I thought it might be of interest to some folks here. This is simply two almost stock TimSav's (without needle cutter, of course) standing on edge with enough room between that up to 6" thick styrofoam can be placed on edge and a hot-wire run through it. The towers are currently slaved to one another so no independent movement of the towers... straight-through cuts only -- no fancy tapers -- it's a simple 2-axis XY machine with 800mm X 600mm workarea. A simple Eleksmaker Mana SE 2-axis CNC controller is used to drive all four motors... two motors per axis and wired in series. I don't want to hijack this thread so any further discussion and/or comments about this particular machine can be taken over to my rather eclectic needle-cutter thread... as I've got more testing and development to do.
-- David