LPF Site Supporter
- Oct 14, 2012
Hi Red, I've recently received my J/L 10X, and I've measured the diameters, and the thread pitch of both sizes of threads on the B.E.Did you machine the parts yourself or have them made?
What is the diameter and thread count, what tap do I need?
I also needed to know these sizes, since I'll be using this on a variety lasers, and will need to make adapters to suit.
I've found one old adapter that I modified to fit this B.E. to my old style J/L PLE, it uses the larger size thread, thus eliminating any radial adjustment possibilities, but it seems to aligned pretty well as is.
I may make more of this style adapter for other hosts. ( I'll add a pic later).
- The smaller diameter thread that is made to attach directly to the J/L PLE Pro is an (18mm x 0.75mm) thread. The actual diameter measures 17.880mm, this is normal for clearance purposes.
- The larger diameter thread that attaches to the alignment ring is a (25mm x 0.75mm) thread. It measures 24.80mm, also for proper clearance.
These are a much finer than normal thread for these diameters, and taps are hard to find, and are fairly expensive. The larger size may have to be custom made. It may be easier to just cut these threads on a lathe, if available.
If you find a cheap source for these size taps let me know! :yh: