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Author Topic: Laminating oven bulb configurations
LookMomNoSights
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I was wondering what people have experimented with in their laminating ovens.....number of bulbs, placement, bulb type? Anyone have much experience with different heat lamp bulbs? I'm using a Ranco temperature controller....so maybe I have a little more flexibility with the bulbs? Ive covered the inside of the box with Reflectix bubble foil insulation to help hold heat.
Also, 99% sure I'm going to try the heat source at the bottom of the box....and the form will rested on supports that sit above the heat, as opposed to the bulbs being inside the lid. Any reason why this might not be the best idea?

Posts: 1054 | From: Massachusetts | Registered: Dec 2009  |  IP: Logged | Report this post to a Moderator
rmorris
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I think I used (8) 100W lightbulbs in an 8 ft long oven lined it 1/2” aluminum back foam insulation. I picked up (2) 600W dimmer switches and was able to control the temperature between 120 -200+ degrees. My bulbs were at the bottom and I attempted to use a fan to circulate the air but the high temp burns up the fans.

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Mad Max
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LookMom
I did my just like you said.
I have 8 bulbs some 100 and some 150
Mine takes a hour to come up to temp. with a fire hose form.

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"nothing ventured ,nothing gained"

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jess stuart
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I have five bulbs in the lid of mine. Built it twenty plus years ago to Binghams specs. I usually have 200 watt bulbs in there but, in the summer I can get away with less wattage or fewer bulbs. I have been thinking of building a new one so the top of the oven is at workbench height and bulbs in the bottom.
Posts: 1427 | From: Moriarty , New Mexico | Registered: Jul 2009  |  IP: Logged | Report this post to a Moderator
LookMomNoSights
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This box is a little taller too, to make just a little more room at the bottom. There is a little more volume to the box obviously.....I was wondering if heat lamp bulbs....say 150's or 200's would get it too hot. As of now, I have 4 sockets. Any ever try actual heat lamp bulbs like they use to keep food warm or like you have outside of a shower in a bathroom? thinking with the Ranco temperature control, I can keep them from getting baking hot (overheating)?
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Pat B
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I used Bingham's Project blueprint for my box. It called for 4 200w bulbs. I also used an inline thermostat from Bingham and added 1" foil lined foam board all around. I found that with 4, 100w bulbs it would get up to temp fairly quickly. I also added a small appliance fan that circulates the hot air inside the box helping to eliminate hot spots.
For stave drying purposes I added a 1" hole at the bottom of one end and another at the top of the other end to get the moisture out. For glue up I cork the 2 vent holes to hold the heat in.

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Posts: 13169 | From: Brevard, NC. | Registered: Apr 2003  |  IP: Logged | Report this post to a Moderator
   

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