I did however have a pair of old Ikea shelf brackets that were close enough thickness wise, so I cut them up to make a start.
![Image](./myff/1898140/IMG_6367x640.jpg)
The spacer blocks are from some 1/4 inch black anodized aluminum that I had laying around.
![Image](./myff/1898141/IMG_6369x640.jpg)
The hex bolts are 1x72 made out of some 1/8th brass hex stock I have a fair bit of.
![Image](./myff/1898142/IMG_6376x640.jpg)
The copper pipe is 1 1/2 inches in diameter.
Mike