The Shop > Metal Stuff
Square lil bertha
shipto:
Well here is the terminals in place and as I said yesterday just need to get the clay to 130°C for 15 minutes to set it.
I installed the element tonight too the pins go into the refractory quite easily but it doesnt seem to want to let go of this water I have put the multimeter on it at far ends for 3 days now and am getting the same reading as I did on day one 1.6m ohm the reading across the terminals (without the element)was 68m ohm.
I have wired it up to my variable power supply at the moment which by my calculations should be supplying about 60 watts been on a few hours now and I am just going to nip out and see what temp i have as long as its not stupidly high I will leave it until tomorrow hopefully it will drive a bit of the moisture out.
shipto:
Well 28volts didnt do much (not that I expected much from 60 watt) but it did make it sweat a little by keeping the temperature in the high 20's. So I have wired up the spare pid with the ssr and a 110V transformer and have the temperature currently sitting at 130°C I have put a lid on with a small opening and the bottom open too so the heat will cause the air to flow freely through the body and this seems to be dying it out nicely.
while its drying I am going to try to sort out the proper lid for it.
shipto:
Today while the refractory was drying out I got the clay on the terminals baked hard, drilled out the 30X30 box for the feet and made a start on the top for it but I have run out of cat litter for the refractory mix so need to get some more of that tomorrow. the top looks like a poor attempt at dream catcher right now.
Will_D:
--- Quote from: shipto on April 23, 2016, 05:01:17 PM ---... but I have run out of cat litter for the refractory mix so need to get some more of that tomorrow.
--- End quote ---
So what is your refractory mix? Or have I just missed it in the posts?
shipto:
--- Quote from: Will_D on April 23, 2016, 05:05:19 PM ---
--- Quote from: shipto on April 23, 2016, 05:01:17 PM ---... but I have run out of cat litter for the refractory mix so need to get some more of that tomorrow.
--- End quote ---
So what is your refractory mix? Or have I just missed it in the posts?
--- End quote ---
No I havent mentioned it but I am using 3 parts cement, 3 parts perlite, 4 parts sand and 4 part betonite clay (cat litter) mixed with as much water required to get desired thickness.
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