I discovered Rocky Mountain Motion Control a couple of days ago. They seem like a great option for Canadians. Ordered some hardware through them. Would love to know what parts you used in your build! I'm doing something very similar
It looks like Rocky Mountain and Grainger have the same hardware. I'll give you links on Rocky Mountain's web site for the same parts I bought from Grainger. There are only three different items—double T nuts and screws, which I used to attach the upper and lower gussets to the rail, and to join two rail pieces end-to-end using 1 in x 8 in x .125 in flat aluminum, and an inside corner bracket that the rocket rests on once it's on the rail.
Double T nut:
https://quickshop.rmmc.net/collections/10-series/products/3280-1-4-20-double-slide-in-economy-t-nut
Screws:
https://quickshop.rmmc.net/collections/10-series/products/3065
Gusset:
https://quickshop.rmmc.net/collections/10-series/products/4136
Inside corner bracket:
https://quickshop.rmmc.net/collections/10-series/products/4119
This is what I bought from Lowes:
Angle aluminum:
https://www.lowes.com/pd/Steelworks...-L-Mill-Finished-Aluminum-Solid-Angle/3053619
Sheet metal (blast deflector):
https://www.lowes.com/pd/Hillman-12-in-x-18-in-Cold-Rolled-Steel-Solid/3059293
Corner braces for blast deflector:
https://www.lowes.com/pd/ReliaBilt-ReliaBilt-1-1-2-in-Zinc-Plated-Corner-Brace-4-Pack/5005366309
I used 2"x.25" bolts for attaching the aluminum to the 2x4, and .75"x.25" bolts to attach the 2x4/aluminum assembly to the Jawstand.
If you're going to do the rail and 2x4 like I did, mark the sides of the aluminum that will be against the 2x4 so the holes are lined up in both pieces. (The bolts will go all the way through.) Drill your aluminum, then lay those pieces on a flat workbench with the 2x4 in between, so everything is flat against the workbench. Clamp the aluminum to the 2x4 on both ends, then drill through the aluminum into the 2x4 a little over halfway through. Then finish the holes from the other side. While the assembly is still clamped, bolt everything together using flat washers against the aluminum on both sides.
Then put that assembly against the top of the Jawstand's flange (I removed the rubber strips from the flange first), lining up the edges of the aluminum with the edges of the flange, then mark your hole through the holes in the flange onto your aluminum. Then drill those holes, and bolt the assembly to the Jawstand.
Then attach the rail to the 2x4 with the gussets, T nuts, and wood screws.
If you follow those steps, it will be easier to attach the rail and get it lined up with the 2x4 assembly, which will be lined up with the Jawstand. That ensures that the rail is vertical when you raise the Jawstand, and not pointing a little off to one side or the other.
The only other tip I'd give you is for attaching the gusset. Take an oversized drill bit and chamfer the two holes that the wood screws will go through. Then line up the gusset at the edge of the 2x4 and drill both holes. Then sink your wood screws all the way down into the chamfer. That way, when you set the bottom screw into the rail hardware, it will clear the head of the inside wood screw. (That's why you don't want to use bolts in the 2x4.)
Other than that, I used two corner braces to attach the blast deflector to the bottom of the 2x4, using machine screws and nuts for metal-to-metal, and wood screws for metal-to-wood.
Hope that helps. Give me a shout if you have more questions.
