The ones I have seen at reasonable prices do not have a temperature guage/dial/command. I knew a few people whose dehydrators got too hot and warped parts.  So, I built my own, with a 60 watt light bulb in base and a light dimmer/switch combo.  When I calibrated it, I found running it wide open resulted in a 100 degree temp.  That is fine- seems to work okay.  So the light dimmer was wasted. I could have used a simple 50 cent switch :-(

I do have a cover on it- my rationale is that I am drying paint with the thing, and do not want to have dust in the shop settle on the still wet paint.  I cut a hole in the plastic cover, and taped one of those "register filters" from the hardware store over the hole, to let air flow through the dryer, but keep dust out.

BTW, I used one of those plastic storage units for the chamber, turning it upside down, with holes in both top (now bottom) and bottom (now top).

A word of caution on dehydrator or any drying box. Be careful what type of stand/holding device you use on the parts. Don't let the model get warm enough to "spring" out of shape.

As in car,tank,truck bodies on a stand with a spring holding device.

This is something new to me.  In 50 years of building, I have never felt the need to use any kind of "drying chamber".  I just let the thing sit for a day or two on the bench at room temperature.  Of course, my work room is air conditioned and I have a room dehumidifier running, and have had no problems with that.

Cadet Chuck

This is something new to me.  In 50 years of building, I have never felt the need to use any kind of "drying chamber".  I just let the thing sit for a day or two on the bench at room temperature.  Of course, my work room is air conditioned and I have a room dehumidifier running, and have had no problems with that.

But Chuck; you have learned the art of patience in those years. *

 Besides you cant get dried fruit from you room like you can from the dehumidifer (usually not at the same time as drying parts though)

Cadet Chuck

This is something new to me.  In 50 years of building, I have never felt the need to use any kind of "drying chamber".  I just let the thing sit for a day or two on the bench at room temperature.  Of course, my work room is air conditioned and I have a room dehumidifier running, and have had no problems with that.

But what kind of paints do you use?  Acrylics dry very fast and don't need a dryer.  Enamels dry much more slowly.  Matt enamels dry in hours, but gloss enamels can, depending on environment, take several days to dry.  So folks who use gloss enamel paint often like a dryer. Even for matt enamels it can speed up a build.