we have the normal white kitchen melamine units - on the cheap
and old side as it happens. We also have a 20-month old granddaughter at the
'drawing on everything with wax crayons' stage. There is one side panel
which would make a good site for a blackboard. Is it feasible to paint
blackboard paint over the melamine, or would we have to have some
intermediate paint layers, or would it be a case of creating a blackboard
from a sheet of ply and then screwing to to the side of the unit?
Key the surface with 0 wire wool first. Then prime (essential) with
real melamine primer (essential). The best of these (better than
International's, although I forget the brand) is a clear watery
varnish that looks like it can't possibly work, but does. As it's so
runny though, take the door off and lay it flat.
Then paint with blackboard paint, which is handy stuff to have around
anyway - ultra matt, ultra black. Incidentally you can shine it up
with wax polish later, if you want a good black eggshell.
Although you could also use it white as a whiteboard, it's hard to
make a DIY whiteboard surface that doesn't stain. If I was trying, I'd
put clear sticky-backed plastic over it.
You'd need to prep the surface first - you could paint it with ESP
primer and then blackboard paint; however given that this is presumably
a relatively short-lived period, why trash the kitchen unit? Just buy a
cheapo kid's blackboard from the Early Learning Centre or ebay, and
stick it to the side of the cupboard with double-sided tape for the next
couple of years.
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