Cleaning slumping molds
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- This topic has 5 replies, 3 voices, and was last updated 9 years, 1 month ago by Stephen Richard.
- January 30, 2014 at 1:02 am #10088
I have several slumping molds that have not been used for a couple of years. The old kiln wash has been removed, however in putting new kiln wash on there are spots that will not take the kiln wash. Anyone got any ideas? Is there a way to further clean them with some type of solution?
Appreciate your input.February 1, 2014 at 2:42 pm #13230wordanaParticipant
Lightly sand. That should get whatever is on the surface off.
Jester’s Baubles Fused Glass DesignsFebruary 1, 2014 at 7:43 pm #13231
Thank you for your response. We have been using the fine 3M pads to get it off but nothing seems to be working. Can they be washed with anything?
DebbieFebruary 2, 2014 at 8:09 am #13232Stephen RichardParticipant
On a number of moulds there is often a spot that does not seem to want to take the kiln wash. This is a hard spot where the liquid slip was hitting the mould. I have found that covering all the mould evenly will give enough coverage that (contrary to appearances) the glass does not stick at normal slumping temperatures, I.e. Not above 677C
blogs at: http://www.verrier-glass.blogspot.com/ and http://www.glasstips.blogspot.com/February 8, 2014 at 6:45 pm #13233
Thank you – Will try again. Do you think boiling the mould in water might get any impurities out of the mould?
DebbieFebruary 8, 2014 at 9:50 pm #13234Stephen RichardParticipant
they are not impurities, just a hard spot
blogs at: http://www.verrier-glass.blogspot.com/ and http://www.glasstips.blogspot.com/
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