On Tuesday, 13 February 2018 19:02:06 UTC, Brian Reay wrote:
The rust points go very deep, with the metal all splaying out. I think one
would need to heat the whole thing to above boiling to get all remaining wa
ter out of the many rusted areas, then somehow hope to seal the epoxy onto
failing plastic coating as well as the piles of rust. It might be doable, b
ut certainly not as simple as glooping some epoxy on.
I expect pickling & hot dip galv would work, don't know what it would cost.
That was my response too, but I wonder how far the corrosion has
reached under the coating. It might be worth stripping it all, shot
blasting and powder coating, rather than patching it up and have the
I was thinking in terms of cutting it back to good metal, then coating
the exposed metal with maybe a primer followed by plastidip suggestion:
Goes to 93C, so should be OK.
I’m sure you’re right, but not every dishwasher uses such high
temperatures. Our Fisher Paykel twin drawer dishwasher uses relatively low
temperature fan driven warm air to do the drying. You can open it at any
time and it’s never really hot like our previous dishwashers were.
I once got a frame like that coated in something for a friend, not having a
dishwasher myself, from a plating company we used ourselves. I'm just trying
to recall what was done. I believe it was blasted to remove all paint, then
etched to remove rust, then anodised... or a similar process for the
material it was made of, though it might have been dipped in some coating I
do not recall now. Whatever it was it outlasted his dishwasher, and so my
thoughts on these racks, though most these days are crappy plastic, is that
the standard of coating put on when new is rubbish.
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