[stephenb (Stephen)]

Thanks all for your advice. I actually used PLOP to do some of the calculations and I understand that an 18-point may be an overkill. By recalculating to a 9-point cell, the balance points for the triangles are only about 2mm further out from the centre of the mirror. No big deal as far as I'm concerned. I can easily make a 9-point cell with the same frame dimensions. I am making the triangles this week.


Flotation Cell Frame Welding Jig.

I knocked up a welding jig this evening from some old scrap. Normally, I wouldn't have done this, but welding can be a bugger of a job, especially when you want your work to be completely square. As anyone who welds knows that the heat can cause bowing and twisting so I wanted to minimise that as much as possible.


Flotation Cell Frame Parts.

Easy! 20mm square tube for the three horizontal rungs and 20 x 8mm flat bar for the two sideframes. All these materials were lying around in the shed. All steel cut and waiting to be welded. Money outlaid so far: nil.