Accessory Holder

For the Spring Concert of 2019 the percussion section had one piece that required quite a few accessory instruments. We had accessory tables and one accessory holder but this piece required multiple players using multiple instruments. Adding more tables would add more space that we knew we would not have at the concert venue. The only solution was more accessory holders.
I purchased a 'Gibralter' mounting clamp and built the remainder of the holder around it.

1.  3/4" square tube as the base of the mount.
2.  Drilled 2 holes to accept the mounting clamp.
3.  Drilled 2 holes for the mounting(vertical) posts.
4.  1/4" bolts (2) with lock washers and nuts for the mounting posts.

That was it. Pretty simple and effective. But we needed a second one.

Not able to buy another 'Gibralter' mounting clamp I borrowed the idea from the 'Reitiesher II' horizontal triangle holder clamping system. Since I had some 8mm all-thread left over from another project, I used that to secure the 3/4" square tube to the 3/4" U channel tube. I added a spring under the hole of the 1/2" U channel and an 8mm washer and threaded connector on top. The slotted side had an 8mm washer and wing nut.  This time I used a 'Dremel' to cut small vertical lines on the mounting posts. This kept the instruments from rotating on the posts.