Then....the issue of the rotating head came into play.....i thought of using some square tubing with a slit cut down its length and some tabs welded on to accept pinch bolts....then i figured it best to visit some folks for scrap to see if it would stir some more ideas.
Thanks to my old man, and my missus' old man I found:
Some U bracket made from 7mm plate 316 marine stainless, 2x 316 SS 1 inch Bolts with 200mm shanks, and 2 feet of 316 SS tubing with an ID of 27mm and a few misc M10 316SS nuts and bolts.
I kept with the theme of SS for the rotating assembly, as welding Mild Steel to stainless…aint such a great idea metallurgically! At these interfaces, I've increased the thickness of the mild steel parts by tig welding 3mm strengthening plates. Thereby, all 4 M10 bolts will be in double shear, across a minimum of 6mm thich material.
Do note, this was all done using nothing more than basic tools: 125mm angle grinder, a cordless drill, a holesaw, some hand files and some home made cutting fluid (canola oil, dishwashing liquid and water). All welds were punched out using my little tig running at its maxed out settings.
So if you dont own a Bridgeport or have three phase, it is still possible to tackle 7mm SS plate!
The tubing fit into the brackets with a press fit, going to show that those Sutton bimetal holesaws are rather accurate! They will be welded in the next few days once all test fitting is complete :)
Aye, i know....tis perhaps overbuild for holding a crossflow....but i find it addictive to keep cutting, welding and over engineering things even when uneccessary!
Let me know your thoughts! :) I hope you enjoy this post, although i understand how it might bore some.