I just got the threaded table, decided to pick it up since it was on sale. Until now I’ve only used the wasteboard with Nitto tape. I’ve had pretty good results with that but wanted to see if the threaded table would save me some time applying the strips of tape every time.
I was wondering about two things:
How exactly am I supposed to use the provided clamps? I don’t see a photo of them mounted anywhere. There’s a threaded hole that fits the screws, and then there’s the recessed slot. Do I use the threaded hole to set the clamp’s height (matching the stock height) and then use a second screw in the slot to produce the clamping force? Is there a way to clamp sideways instead of from the top?
The second question is what people recommend to avoid the cutter touching the table during the bottom passes. With the wasteboard the stock was always 0.2mm above the wasteboard surface so I zeroed there and that gave very clean results (not that it would matter much if it cut into the wasteboard). The bottom pass was precisely aligned with the stock bottom and also above the tape, avoiding gunking up the cutter.
When I tried the table now for the first time, I clamped the stock directly to it and zeroed exactly at the table surface. I noticed that the table must be not perfectly level, because the cutter did end up cutting into the metal on one side (see photo, I zeroed near the left edge of the table and it hit the table near the right edge). With the wasteboard I was easily able to fix that by milling it down by half a millimeter or so, resulting in a perfectly square plane in relation to the cutter path. I can’t do that with the table, so is there a way to calibrate/adjust the plane of the machine’s bottom carriage on which the table is mounted?
Also I’d like to have a bit of safety margin like I had with the 0.2mm for the tape in the past. Do people just use some sacrificial material between the table and the stock bottom? I guess a few sheets of paper would do it.