Don't Have 3\4 Aluminum Plate. So We Make It

About the only thing I can suggest, especially if the epoxy joint fails on you, is to sandblast the mating surfaces before re-gluing. This should improve the bond two ways - (1) clean the surfaces, and (2) give the epoxy some extra surfaces to bond to. The roughened surface should be especially helpful in resisting shear forces.

Could you have drilled holes thru one plate , then plug welded it to the other ? Sounds like a pretty cool project either way ! Epoxy is a great thing. Post pics of the project !

Something to consider is that with the action of the knurling process the wheels will directly pull the two halves apart. And with the need for heavy pressure the aluminum might not hold up long even if it were not split.

Again, appreciate the comments. The plans URL I'll post. Project is moving along. Band sawed the shape out last night an will drill the holes for the pivot point today and further refine the shape. I'm waiting on the knurl wheels to size the placement of the holes for the shoulder bolts. Plan on using some brass tube as a bearing service for the knurling wheels . I only have a 8 x 16 grizzle vs lathe and a smalI HF. Mill. So cutting steel is possible with tooling , but more than I have at present. I know some are saying why waste the time with improper material as I can buy a complete sissor knurled for $40. Hey, I'm a hobbist, newly retired and learning as I go. Have done advanced wood working also as a hobby for years, but added the metal working machines just recently . Got the time,ambition but lack the skill of many professionals on this board. That's the beauty of this communication board great comments and steerage. Tom

When you use the scissor knurler there is heavy pressure on the knurls. brass tube alone might not hold up. You could just use a solid pin. Really great to make the tools yourself. Making the pins is a little lathe job all its own. Need something to hold the pins in like kotter pins or e clips

As for the wheel axles of the knurl wheels, the plan is to use a brass tube, which drill rod will pass. The brass will hopefully be a bearing surface to the aluminum . Tom

My sissor knurler the hardened pins are pressed into the steel arms , the wheels spin on the pins

I'd feel more comfortable with a few 10-32 socket head cap screws and permanent lock-tight along with your adhesive. If that's possible with your design.

Tom---I too believe in using what you have at the time---I would just add a few steel rivets to totally bind the two sections together--if you don't have any rivets you just cut some small bolts and rivet them tight---Dave