Base and UC temps

JimKueneman said:
Lot of info on temps for epoxy. What about base and UC? What is the coldest metal temp have you shot on?
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Ideally you never want to go under 65 when spraying. Solvent trapping can be a real issue when spraying in lower temps. Theoretically you could spray in conditions as low as mid 50's but it's most definitely not a good idea. The old rule of thumb with urethane primers and clears was that for every 15 degree increase or derease in temperature the curing time doubles (decrease) or halves(increase). Urethane will still cure with temps in the 50's but it will be very slow. And because it's so cold solvent trapping becomes a huge issue. Just not a good idea to spray in temps below 65 degrees.
 
JimKueneman said:
Lot of info on temps for epoxy. What about base and UC? What is the coldest metal temp have you shot on?
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Many of us owe you a gratitude of thanks for stepping up and challenging technology by pushing the limits for everyone's benefit.

Looking forward to reading your newest book, Automotive Painting in Alaska Climate :D
 
MJM said:
Many of us owe you a gratitude of thanks for stepping up and challenging technology by pushing the limits for everyone's benefit.

Looking forward to reading your newest book, Automotive Painting in Alaska Climate :D
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Well Arizona Winter Climate!
 
I'm wracking my brain trying to think of ways to keep the thing warm enough while you spyay, and the only thing I can think of is radiant heaters. Lots of radiant heaters. Presto heat dishes or Infratechs. Not a cheap solution though, and would require several circuits worth of juice.
 
You dont get any dew in the mornings? Sorry I am a Michigan kid, I'm just used to waking up to everything wet in the mornings when the temps drop.
 
crashtech said:
I'm wracking my brain trying to think of ways to keep the thing warm enough while you spray, and the only thing I can think of is radiant heaters. Lots of radiant heaters. Presto heat dishes or Infratechs. Not a cheap solution though, and would require several circuits worth of juice.
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As long as the sun shines one side of the trucks will get to 90 degrees when it is 60 out... just need to keep rotating it I guess.
 
OJ86 said:
You dont get any dew in the mornings? Sorry I am a Michigan kid, I'm just used to waking up to everything wet in the mornings when the temps drop.
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Rarely. Typically the humidity is in the single digits unless a storm is moving through. I can leave blasted metal outside for weeks typically and not have it rust.
 
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Temp frame wrapped in clear plastic would heat it up pretty quickly.A lot of work setting it up though.
 
I have a 150,000 BTU Master torpedo style kerosene heater. It runs on diesel fuel with a small percentage of gasoline added.
This thing will super heat my garage booth and bring metal temperatures up into the mid seventies very quickly. Once everything is warm, I have propane wall furnace that helps maintain the heat level.

Off course when I open the windows in the garage area and turn on the booth fans, things quickly start to cool down. The metal cools the slowest so I can get my painting done, then when the cloud clears, close the windows and door.

I also had a portable 220v electric heater to keep in the booth to maintain temps above 50 degrees overnight but it quit working and needs to be replaced.
 
'68 Coronet R/T said:
I have a 150,000 BTU Master torpedo style kerosene heater. It runs on diesel fuel with a small percentage of gasoline added.
This thing will super heat my garage booth and bring metal temperatures up into the mid seventies very quickly. Once everything is warm, I have propane wall furnace that helps maintain the heat level.

Off course when I open the windows in the garage area and turn on the booth fans, things quickly start to cool down. The metal cools the slowest so I can get my painting done, then when the cloud clears, close the windows and door.

I also had a portable 220v electric heater to keep in the booth to maintain temps above 50 degrees overnight but it quit working and needs to be replaced.
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I agree…kero torpedo heater will have it as warm as you want. I use one in the winter as well.
 
'68 Coronet R/T said:
I have a 150,000 BTU Master torpedo style kerosene heater. It runs on diesel fuel with a small percentage of gasoline added.
This thing will super heat my garage booth and bring metal temperatures up into the mid seventies very quickly. Once everything is warm, I have propane wall furnace that helps maintain the heat level.

Off course when I open the windows in the garage area and turn on the booth fans, things quickly start to cool down. The metal cools the slowest so I can get my painting done, then when the cloud clears, close the windows and door.

I also had a portable 220v electric heater to keep in the booth to maintain temps above 50 degrees overnight but it quit working and needs to be replaced.
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after buying k1, i think i'll be using fuel now on. it will smoke a little at start and stop. soes adding gas take care of that? how much gas to a gallon?
 
It runs on diesel fuel with a small percentage of gasoline added.
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Some, (if not all?) of the new torpedo heaters will run on multiple fuels including diesel.
I have an older 150,000 BTU Reddi-Heater will not run on diesel. Kerosene is getting hard to find cheap. Used to get 55 gal drums delivered.
What percentage of gasoline makes the burn the diesel?
 
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