|Forum topic by srfrancis||posted 02-17-2016 02:25 PM||662 views||0 times favorited||8 replies|
02-17-2016 02:25 PM
Just wondering if this has been done or worth the effort. Extensive googling hasn’t gotten me anywhere. Working on a sketchup.
Had an idea to mount my contractors table saw trunnion/motor assembly onto a movable carriage, like a gantry, using linear bearings to keep things straight. Keep this whole gantry under the table with the blade cutting though like it would otherwise for a regular table saw. Make like a 9 foot cutting length with about a foot over hang to go past the cutting area. Add a linear rack/motor to the cutting axis, and motors to the height and angle axes. This gives a straight cutting axis with the precision limited to the linear rail, so say less than 1/32” along over the whole length.
Add a removable rail to one end with a incremental adjuster for squareness and adjust that to less than the same 1/32” for the whole length. Use a threaded rod for measuring length along the rail for the stop, good to the thousandth of an inch. With this you can break down plywood hands free and repeatable. Can also do thin strips as well as edge joint up to the whole length.
Place a miter gauge slot perpendicular to the cutting direction with an incremental miter gauge and fence, which can give you down to 0.05 degree precision. Use the same length adjusting system as above. With this you can do any miters and shallow angles for a full piece of plywood or any other lumber to 9 feet.
As far as electronics, put in a digital readout for the bevel and height which you can code in. Place a rotary for speed control for feeding the saw forward or back, maybe a single pushbutton for a full length cut. I suppose you could add in the motor controller for all the stop blocks and or miter gauges and automate the whole thing. Clamps to hold down pieces.
With this you can cut anything you can lay on the table repeatable and hands free. 4” depth of cut compared to CNC router, ~2’x11’ table size. Fold out support wings. I think the accuracy could be made as good or better than a sliding table saw with way longer rip capacity.