Weight testing the drainer.
In the pan are a 5ltr. and 2 x 1ltr. containers filled to the brim (I know that because I filled them) so in total there will be 7.5 ltr. minimum (the pan is 6ltr. capacity so will never have this much oil in it). Water has a density of 1g/cc. making 1 ltr. of water weigh 1kg. Oil is slightly less dense that water because it floats on top of water (just) so I would estimate 7kg in the pan showing no sign of destabilising the drainer even when moving it across the floor.
It's been many years in the dark and dingy past since I did Physics at Grammar School so if I got some details wrong please correct me
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I'll find out if it works this next week after I get the bench finished.
Tony.
ps. By the way I made this for my old mate who lost his wife a few weeks ago.