How to setup and odd jobs

[Alistair_Blake]

I’ve been really interested in the series of videos about the frames. However they’ve never been completly aplicable to the kind of work I do. I fabricate for artists and it can end up getting pretty weird with odd dimensions and angles.

I have a drawing from a recent job and I would be interested to hear peoples opinions on how they would fixutre, given that not every part lies at 90 degrees. would this be in one setup or multiple, would you use custom jigs and if so how would you make them?

Jason i would be particularly interested in how you would acomplish this design with the fireball system, I feel there are a great number of things that set the fireball table apart but I’ve never found an easy answer for jobs like this.

A few notes about the drawing

This drawing is not complete as there are weird angles that live in the CAD file, 89.2 degrees for example. the drawing only has what is needed for me to assemble and weld.

dimensions in milimetres

the tube is 20x20mm (about 3/4")

The parts are rough cut by chopsaw or angle grinder and then ground to the correct dimension and angle using a jig that bolts to a linisher

This was a one off however in the future expect runs of about 5 with some variation in dimensions and angles.

I’d also be interested to hear how people would price a weird job like this as compared to something more on the 90, this is always soemthing I struggle with especially as I work in a consultant capacity for artsist alongside jobs like this.

Thanks!

[Fireball_Wyatt]

I would lay something like this out in 3 setups

You would layout the top hoop out first as follows,

With this completed you can then layout the bottom hoop,

This sets you up for the next step you leave your fixtures in place from the previous setup and add the fixtures that will index the the top hoop to the bottom hoop,

Here is an Isometric View of the same setup so you can see how we use the fixtures to build in 3D space,

Hope this helps.

[ArcWeld]

Wow. Great demonstration Wyatt. As I consider the investment for a table, and with my limited experience and imagination, I find examples like this to be very powerful illustrations of what’s possible. Thank you.

[Don]

Since you mentioned the tube is 20mm square, I assume all your measurements are metric? What kind of artistic work requires precision down to the hundredths of a mm?