I am working on a DIY wood router, and would like to get some opinions on this rail type.
In particular, I am considering making the Y axis from the pacific bearings IVTAAE bolt on linear guide: (one of them, not a pair)
IVTAAE Bolt-On Linear Guides - Double Width | Integral V Technology
The tables show "ratings" for these guides, but they don't give any information on how much deflection there is under load. For example, I roughly estimate that during a router operation, the forces will be about 100 lbs at a 1 ft distance, so about 1200 in-lbs of torque on the Y rail.
The fixed gantry will be about 7 ft long, and I will make it as stiff as possible, but of course any gantry will twist a little.
Even if the gantry does not twist at all, the rail will twist some under load - but - how much ? My target is to have less than 0.010 inch total error if possible, so I would like to have no more than 10 - 20% from Y rail deflection.
Any suggestions or prior experience with these rails ?