Hold Down brackets. The spacing is 100mm. The Center hole is 50mm. I’ll use that to hold a angle bracket (which I have not designed yet) for round/irregular materials.
Once I am done, I’ll upload the STLs & the DXG to Youimage.
*Notice the bolts are too long. Thats I all I had in my parts bin.
Very nice. I would love to have this printed. What are the pieces embedded in the wood so you can thread the bolt into called?
Threaded Inserts (In my case its 10-32 threads)
10-32 !!?? On 100mm spacing? Tsk tsk 
Heh. Like I said I used what I had. As for the spacing. That works for me.
I was just joking about the mixing of imperial and SI units.
