Found a bargain lens Schneider 150mm Symar-S in a SyncroCompur shutter and need a lensboard for my ancient Calumet Monorail. I measured the threaded part of the lens to about 40mm ~ 41mm. I've seen lensboards for sale with 39mm to 42mm holes but no physical dimensions of the board. Are the lens board sizes standard and are the hole sizes standard? Can I use Omega, Toyo, or other lensboards? are there any resources for getting their dimensions? Would it be easier to make one out of wood than to hunt for my specific needs.