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Post by coastalrocketeer on Dec 15, 2018 0:59:28 GMT -8
It’s been in the oven at 180 for about 3 hours now. Will be interesting to see how it turns out in the morning.
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Post by smartliketruck on Dec 15, 2018 7:10:20 GMT -8
It’s been in the oven at 180 for about 3 hours now. Will be interesting to see how it turns out in the morning. If you can check it with an IR themometer and it's not dry it will be cooler than the oven due to evaporation. A little easier than having to pull it out to weigh it multiple times. |
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Post by coastalrocketeer on Dec 15, 2018 10:31:37 GMT -8
Thanks... that’s a good idea! :-)
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Post by coastalrocketeer on Dec 15, 2018 13:43:43 GMT -8
the straps shrank when taken to 230F, so I decided it was strong enough to take out and check on...  |
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Post by coastalrocketeer on Dec 15, 2018 13:46:06 GMT -8
The longer one was really strung tight...  Took a while, and some blow torch work for me to burn through all the layers of milk carton blocking free gas flow... |
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Post by coastalrocketeer on Dec 15, 2018 13:48:12 GMT -8
Once it did, it started burning the right direction immediately, and finished off the rest of the plastic and paper fairly quickly.  |
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Post by coastalrocketeer on Dec 15, 2018 13:49:30 GMT -8
When I first took it out of the oven the body of it made a dull thud when tapped... like an a piece of acoustical wood fiber board or ceiling tile... after having a hot fire in it for an hour and a half, it rings like it has sintered or hardened a lot.
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Post by coastalrocketeer on Dec 15, 2018 13:54:54 GMT -8
I decided to see how it stood up to the plumbers torch... and found I can “sinter” the outside to where it sounds like glass when tapped on too. the grey areas are areas I heated to yellow/orange hot with the torch...  It runs for 45 minutes to an hour on a 5 inch block of 2x4 as in the one on the ground in that photo. Split into chop stick to 1x1 cm pieces. I may have made the world’s smallest, lightest weight refractory rocket cook stove... LOL... I really like that I can torch sinter this mix to cure good and hard. After I torch sinter the whole thing I will need to soak it with water and see if it survives. then I will try starting a fire in it to dry it out. |
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Post by coastalrocketeer on Dec 15, 2018 13:57:28 GMT -8
I’ve run it for about 2 hours with no signs of stress cracking or deterioration .... It’s only gotten harder and stronger so far.
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Post by coastalrocketeer on Dec 15, 2018 13:59:06 GMT -8
I think I need to get one of those big weed burner torches if I am going to make torch sintering a reasonably fast process for any larger constructions.
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Post by smartliketruck on Dec 15, 2018 15:48:02 GMT -8
Way to go coastalrocketeer!
How is the bond to the base plate holding up?
I can hardly wait to try a zeolite based binder when I get home, I haven't been able to source any SweetPDZ but I did find an ice traction product called EcoTraction
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Post by coastalrocketeer on Dec 15, 2018 16:26:56 GMT -8
Sweet, I’ll have to look at that one... and add it to Karl’s Clinoptilolite related threads as an additional source of zeolite. How much does it cost? I think SweetPDZ cost me around $20 for a 40 lb bag locally.
Had to run some errands for a few hours. I bought a weed dragon 100 kBtu propane torch for $85 at my tiny town hardware store (ouch)... and it started raining while I was out, so nature is soaking my partially sintered mini stove for me.
Will be a good test to see if it can survive going from soaked to dry with the torch. I suspect it will, but the proof will be in the pudding once it stops raining.
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Post by coastalrocketeer on Dec 15, 2018 19:02:50 GMT -8
Well, the bond to the baseplate detached on the feed tube end. It has a crack accross it, and there are a couple of other cracks... in the thinnest area of the riser, and in the interior only of the feed tube. The abuse I put it through in terms of heat cycling was pretty extreme though...
How did you discover that EcoTraction was Clinoptilolite?
They seem rather cagey about what it is on their website.
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Post by smartliketruck on Dec 16, 2018 7:13:51 GMT -8
How did you discover that EcoTraction was Clinoptilolite? They seem rather cagey about what it is on their website. I think I noticed it in the store when I was looking at another traction product called Lava Grip for an aggregate, it's a black glassy pumice that is mined a few hours away from me. |
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Post by coastalrocketeer on Dec 16, 2018 16:32:02 GMT -8
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