Making Straight Angles With Help of a Jig

by Jim Carr
(Pittsburgh, Pa)

Right Angle Jig

Right Angle Jig

Right Angle Jig
Welding Right Angle In The Jig
Welded Right Angle Piece
Straight Angle Weld

Sometimes making straight angles with angled steel can take three hands and many clamps.


Lowe's stores have angles used to align three pieces of wood. I saw this particular piece and thought that it would make a good right angle jig. The photos show the jig, the angles in the jig that have just been welded, the welded piece and a right angle tool that shows how the jig can give you accuracy.

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Oct 18, 2015
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Harbor Freight Clamps.
by: Anonymous

I'm not a big harbor freight fan, but they sell large & small right angle clamps that you can weld right in the jig.

Jan 20, 2015
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Minor Improvement
by: Jim

One problem with using extruded angle iron is that outside corners are square, but inside corners have a radius. If the jig is made of extruded angle, the extruded angle will not fit into the corners tightly. To deal with this, I welded my own angle from HRM flat stock and welded it on the outside corners only. This leaves the inside corners of the jig perfectly square and lets the angle stock to be welded seat fully into the corners of the jig.

Nov 29, 2014
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Tell me how you would now weld the pipe
by: Anonymous

I am interested I. Hearing the rest anonymous. Thanks

Jul 31, 2013
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Making a jig for a corral welding project
by: Anonymous

Here is an idea that comes to mind.
1. Perhaps you have 2" diameter pipe in ten foot sections. The objective is to make section of fence 5' high by 10' long and then connect the sections. I have some ideas for connecting the sections, but more on that later.
2. Having/using a 12'' De Walt or Rigid metal cutting saw is a big time saver and will insure accurate cuts. Also using an acetylene torch and a heavy duty grinder will help.
3. Make the jig. Using old but straight 2x6 lumber, build a rectangle about 6x11 and on/in the rectangle add two more pieces of wood for the two cross pieces. A drawing here would help, but no can do.
4. Once the jig is assembled put hangers or hooks in several places to hold the pipe. With the help of several guys lift the jig land lean it against a wall or another fence so that the jig is at a 50 to 60 degree angle from the ground. The jig now looks like a painter's easel.
5. Without cutting or welding anything, put pipe or 2x2 wood on the jig and measure with a carpenters square. Make sure all angles are 90 degrees.
Enough for now. if the jig sounds viable, let me know and I have some ideas of how to fit the pipe into a neat pattern.

Jul 24, 2013
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Pipe Welding Jig
by: Anonymous

Great Jig for Right Angles. Do you have any ideas about using jigs to weld pipes for horse corrals?

Dec 31, 2011
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Happy New Year 2012
by: Anonymous

Dear Sirs,
Happy New Year 2012 and best wishes to all of Wc Welding Manager and staff members.
Many thank for your welding technical figures.
Now I have the progress and good effort to improve my welding work both onshore and/or offshore construction project in Indonesia, Malaysia and Singapore. Especially for oil rig platform AWS D1.1 Code, oil storage tank API-650 STD,ANSI B31,3 and others.
Kind regards,
Raymond Rondina

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