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Post by rockjunquie on Mar 1, 2020 15:47:28 GMT -5
I have been using the heat from an old 60 watt bulb for relaxing fractures and preparing them for hxtal. And, then to actually cure the hxtal. However, some pieces are bigger than a bulb's reach. I'm considering a thrift store toaster oven for slabs. What is a good temp for this work? I don't know how hot the bulb gets, but it's pretty hot.
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Post by Pat on Mar 1, 2020 16:08:06 GMT -5
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Post by rockjunquie on Mar 1, 2020 16:43:36 GMT -5
That gets me closer. But, I was putting the bulb right over it, not 12". I'm guessing it was somewhere around 200 degrees.
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Post by knave on Mar 1, 2020 19:58:17 GMT -5
First off you are way ahead of me with relaxing fractures etc. But you are hoping to replicate the light bulb on a larger scale. The lightbulb was mostly radiant heat from the top side, which makes it complicated. If you have access to an infrared thermometer use the bulb like usual on a smaller slab, then grab an average temp of the stone surface.
Desired slab temp + 5 - 10°F = oven setpoint. Since the oven is enclosed it is more of a convection heat.
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einholt
noticing nice landscape pebbles
Member since May 2019
Posts: 95
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Post by einholt on Mar 2, 2020 9:32:00 GMT -5
I've used heat lamps with ceramic bulbs for chicken coops, one bulb could heat a large coop in a short period of time. I imagine a foil lined cooler or some sort of box and one of those would heat a slab to whatever temp you could desire.
Edit: after looking into it a bit, the ceramics have very focused heat, if it's a large working area, maybe the standard red 250 watt chicken bulb would be better.
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zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
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Post by zarguy on Mar 2, 2020 10:36:23 GMT -5
I use a 100w incandescent light bulb in a draftsman's lamp. The bulb ends up about 1 1/2 - 2" away from the stone. I set the rock on a 1/4" steel plate. That absorbs heat & heats the bottom of the stone. I heat it up for about an hour before I apply Hxtal. Then afterwards, I put the lamp back on for 2 - 4 hours. I've thought about using a toaster oven, but haven't with Hxtal. My batches are small enough that I just use the heatlamp. I use a toaster oven for curing Cactus Juice that's been infused in a vacuum chamber. I heat that to 225 degrees. Lynn
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Post by roy on Mar 2, 2020 12:05:23 GMT -5
first the rock should be dry this can only be done with a toaster oven or your kitchen oven me i bought on at a thrift store for 10 dollars set it on 200 for 30 mins then proceed
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Post by Peruano on Mar 2, 2020 12:33:41 GMT -5
Some of the oldest warmers for dopping wax were nothing more than a metal cover over a light bulb. Bend a U-shaped piece of thin metal and position an normal incandescent bulb underneath it and you have a flat heating surface and the heat more up than down as has been mentioned. Adjust height if U or size of bulb to adjust heat.
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Post by joshuamcduffie on Mar 2, 2020 13:13:56 GMT -5
griddle pan?
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Post by rockjunquie on Mar 2, 2020 15:01:53 GMT -5
I use a 100w incandescent light bulb in a draftsman's lamp. The bulb ends up about 1 1/2 - 2" away from the stone. I set the rock on a 1/4" steel plate. That absorbs heat & heats the bottom of the stone. I heat it up for about an hour before I apply Hxtal. Then afterwards, I put the lamp back on for 2 - 4 hours. I've thought about using a toaster oven, but haven't with Hxtal. My batches are small enough that I just use the heatlamp. I use a toaster oven for curing Cactus Juice that's been infused in a vacuum chamber. I heat that to 225 degrees. Lynn
Perfect, thank you!
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Post by rockjunquie on Mar 2, 2020 15:02:26 GMT -5
first the rock should be dry this can only be done with a toaster oven or your kitchen oven me i bought on at a thrift store for 10 dollars set it on 200 for 30 mins then proceed 200 sounds good then, thanks!
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How hot?
Mar 3, 2020 8:34:58 GMT -5
via mobile
Post by orrum on Mar 3, 2020 8:34:58 GMT -5
Hey Lynn how do you use the vacuum to stabilize. I like your lil recipe for fractures. ZARGUY "ZARGUY" I forgot how to make someone's name get dark so they get a notification....HELP PLEASE 😁
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Post by hummingbirdstones on Mar 3, 2020 8:51:39 GMT -5
Hey Lynn how do you use the vacuum to stabilize. I like your lil recipe for fractures. ZARGUY "ZARGUY" I forgot how to make someone's name get dark so they get a notification....HELP PLEASE 😁
You have to put the "@" sign in front of their handle, orrum.
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Post by RocksInNJ on Mar 3, 2020 11:46:29 GMT -5
Does all of this mean that an Easy Bake Oven won’t work?
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zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
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Post by zarguy on Mar 3, 2020 11:46:37 GMT -5
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How hot?
Mar 4, 2020 11:24:02 GMT -5
via mobile
Post by orrum on Mar 4, 2020 11:24:02 GMT -5
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How hot?
Mar 4, 2020 12:03:46 GMT -5
via mobile
Post by knave on Mar 4, 2020 12:03:46 GMT -5
Google is useful, but google is not my friend. Lol!
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How hot?
Mar 4, 2020 17:43:53 GMT -5
via mobile
Post by Rockoonz on Mar 4, 2020 17:43:53 GMT -5
Lots of good tutorials on the use of cactus juice on YouTube.
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How hot?
Mar 4, 2020 17:52:14 GMT -5
via mobile
Post by knave on Mar 4, 2020 17:52:14 GMT -5
A regular canning jar is rated (able) to hold a complete vacuum (-14.7 psig, 30” hg) So if you’re on a budget, you can make your own vacuum chamber. I used to boil water in them at room temp, and also it’s fun to watch what happens to jumbo marshmallows in a vac. Lol
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