Searched here, Summit, Jeg's, Fastenal, and Grainger. Struck out on all of them. I need two lengths of aluminum hex 1" OD and 3/8" ID so I can drill and tap for fuel lines. I'm planning on running a line on each side of a 6X2 intake. Picture attached. I'll be eliminating the choke rods. I've arranged it so all linkage is on the inside and fuel logs on the outside. Movin/on
^^^^^ another source https://www.mcmaster.com/products/metals/shape~hex-bar/width~1/material~aluminum/length~12/
I think your best bet is to buy 1" hexagon aluminum bar stock, and have someone with a lathe bore it. Then you can thread each end for plugs or fittings, and D&T your outlets. Ebay has lots of sellers of 1" aluminum hex barstock.
Do a Google search for “aluminum hexagon extrusions” quite a bit came up. Drilling hex bar stock sounds like the best option as it gives you the option of threading for fittings.
I do have a metal lathe with a tail stock which holds a drill bit. The head of the lathe has a 1-1/2 inch pass through so there will not be that much stock exposed to the drill bit. I'll probably buy three 1 ft pieces just in case I mess one up. The McMaster Carr site is a good option with the 1" 0.25 wall size. Thanks: Movin/on
I'd buy one piece thats longer than 2 ft as you may find that you want to cut to length and maybe need something slightly longer. I bought some ready made fuel logs and they were 16" long. Not hex shaped. Also you will need a "center drill" to initially start your drill hole and keep it on center. Then buy a "long" drill bit so you can drill deep enough to meet in the middle. I'd start with a 2 flute 5/16 or so and drill a pilot hole. As you get deeper, pull the drill bit out of the part and clear the chips multiple times. Last thing you want to do is to break the drill bit inside the part. Once you have that drilled most or all the way thru, then finish with the 3/8 long drill bit. If you can find a 3 flute bit, it will go more smoothly on the finished size. Then drill each end to the correct size for the threaded fitting. While you have it in the lathe chuck..........use a small "center" in the tailstock or in a chuck inserted in the tailstock to center your tap handle/tap in the and keep light pressure against it while tapping your thread. That should get your thread straight. May have to shift the lathe into a lower gear so it doesn't turn while tapping and squirt a little fluid on the tap. Probably need to tap part way then back the tap out. Blow chips out and finish tapping it. The center drills pictured below just drill a shallow hole to insure the drill bit stays centered when you start drilling. Don't get the smallest one.
Or Amazon if it's cheaper than McMaster (usually is) https://www.amazon.com/Pieces-ALUMI...sprefix=aluminum+hex+bar+stock,aps,205&sr=8-3
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