damagi wrote:I like it - Lets start the comparison here.
In all cases, a higher quality blade than the one which came with the saw goes a long way. Sometimes this part is overlooked
The angle iron + hardboard version:
1) has two parts plus screws - lower cost ($$), easy to source parts
2) It exactly matches the cutline
3) works with any saw
4) works with any router
truetrac:
1) saw is captive on the track, ensuring that both sides of the cut are straight. unclear if riding "on top of the channel" yields significant benefits - testing needed
2) track is expandable in a way which allows tracks to be joined
3) anti-chip edge (not sure how the angle iron + hardboard version performs here)
4) no router capability announced
5) $$$
Angle iron + hardboard:
1) 1" Aluminum angle is used
2) Countersunk holes every 6" or so are drilled thru one side of the angle
3) The other side of the 1" angle is sawn off to 1/2" to allow saw to not rub on the angle.
4) After screwing the angle to the board and filing the flush on bottom, the board is sawn off using the portable hand saw. This makes the board only suitable for that one saw.
5) Small clamps are used to align the edge with the proposed cutting line.
6) After clamping (and adjusting with a hammer) simply saw off the material while pressing the saw platen against the 1/2" vertical aluminum wall.
7) Hardboard cutting edge is intact. If it gets nicked because of rough handling it will still be perfectly good - the straight sawing is guided from the aluminum angle. The hardboard cutting edge only serves to line up the cut.
8) I made an 8' straight edge and later reduced it to 5'. Easier to hang on the wall and never used the 8' length, because of reducing
the 4' length of sheet goods before the 8' length.
9) Cost - only about $4 for the aluminum angle because had hardboard scrap, drill bit, screws and file.
10) New unit would have to be made for a router, but as yet no need. Grooves and dados made with Shopsmith.
Octogenarian's have an earned right to be a curmudgeon.
Chuck in Lancaster, CA