For years I used a DeWalt circular saw with a home made guide for breaking down sheet goods. Usually I cut on the ground or on my assembly table, using foam insulation board underneath for support and protection.
Last year I upgraded to a Makita track saw, mostly for the dust collection, partly for the plunge cutting capability. The saw came with a 55" track but I thought the price for the 118" version was astronomical (I think the oversized shipping has something to do with this). Some woodworkers like to make their solutions to problems rather than buy them. So I made my own tracks out of 1/2" MDF which turned to be surprisingly easy to do. I made one about 115" long and another 72" which works out well for 5x5 Baltic Birch sheets. To give them some non-skid grip, I sprayed the underside with Plasti-Dip. They seem to grip pretty well, but occasionally I need to wipe them down to clear off dust.
There's no difference in the performance of the shop made tracks versus the aluminum, but the aluminum ones are cooler, a little lighter, and say "Makita" on them. Make the guide a little oversize in width and trim it to zero clearance with the first cut. The aluminum ones come with an extruded slot for using their spiffy clamps. I kept a clamping ledge so I could use regular old F clamps. With the non skid backing, many people don't clamp at all, sometimes I do, sometimes I don't.
I've posted some photos. For anyone who needs tracks and wants to save some coin, I hope this is helpful.
By the way, the other thing I learned about track saws is they come with a very fine finishing blade. If you're going to cut thicker or denser material, it pays to buy a coarser tooth blade or the saw will labor. Mine came with a 48 tooth, I added a 28 tooth and 14 tooth blade, both from Freud.
Edwin
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