Infrastructure
Hardwood tubing blocks to prop the frame centerline 34 mm above the surface plate I’m going to use to stick together the next few frames (the “surface plate” in question is a large chunk of granite countertop that’s sitting in the basement. It’s level, but not as absolutely level as those big thick surface plates you can buy, so there will probably be the need for a little bit of finishing alignment when I’m done gluing the frames together.)