Frame jig

I've seen a lot of people building frames against a piece of plywood or even OSB and I was wondering if the jig I plan on building will have any advantages/disadvantages to the board jig.

Working in apartment maintenance I've amassed a pretty sizable collection of bed frame angle iron, I can never let a piece stay in the dumpster because it's so darned handy and free angle iron is great.

I plan on laying down two lengths parallel then bolting them to some 3/4 fiberboard and making fixtures for the rear dropout, crank tube and building a triangulated head tube brace out of a fork. Basically the fixtures will bolt to the frame and be able to slide along the angle iron rails and clamp into place so once I cut the frame in two I can just slide the halves apart to my final length then lock everything down to weld in the new tubing.

The main advantage I can see is I will be able to weld both sides of the frame without removing the frame from the jig.

you can make a jig out of just about anything, but it needs to be stronger than the frame you are building. i have yet to build a jig for a bicycle frame, but i have built a few harley frames on this boat anchor. the way i figure it, if you can build the jig, you can build the frame.

nice craftsmanship !

such pretty welds...

*drools*

No subsitute for TIG, is there? A plasma cutter is a nice tool to have too. I see you have one.
Tom

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Age and Treachery Will Always Triumph
Over Youth and Skill

nice shop! I would love to have one like that! I dig the really heavy table you got there, that what I call a fabrication table! and also nice work!

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" We cannot live through a single day without making an impact on the world around us. And we all have free choice - what sort of difference do we want to make?" ~Jane Goodall~

Holy crow! That is a very nice shop you got there!
I too wish my welds looked like a stack of dimes.
Mine are high quality booger welds, but so far they have never failed.

Used to frequent a 4x4 forum and one of the member's screen name was "Boogerwelds"