I use one of these: ebay link and it works very well... so easy to use!




Alessandro

Very nice unit. Where were you when I was scronging around for scrap ovens?

I would have bought this in a heart beat. 

Thanks for posting.

Fred 

Sorry..... I'm just three months old in composites world!!

Yes the unit is really easy to use... The best would be to get something that can manage ramp temperature.. It's a little bit boring to remember going to change the temp every hour! But for my little works it's ok by now...

If anybody is interested in managing ramp temperature I can tell you look for beer brewing equipment...

I found out that for doing beer at home you need to warm up the thing with a ramp... and so you can easily find there temp controllers.. It seems to me they were about 100 euros...

The other way (maybe cheaper but you need pc-electronics skill) is to get an interface for the temp probe and work it out with a pc


Alessandro

Seems like there are several of us doing similar things - I finally got my oven working today
My oven is in the roof space of the garage above the car ramp and consists of a 6ft wide by 8ft deep oven using 50mm foil lined cellotex, a chipboard and hardboard floor, cellotex lined doors.
The electrics are 12v control circuitry, PID controller (ebay china special but seems good), solid state relay for switching the heater elements, 2kw fan heater, thermal cut-outs, double pole relay and a couple of switches.  The fan is enclosed in a shroud and draws air from the far end through 2 x 4" ducts in the apex in an effort to cycle the air for even temperature.

Going for safety and fail-safe in building this so the 12v relay, momentary switch & thermal cut-outs make a collapsible circuit - you have to press the momentary button to start the controller & distribute 240v and if either thermal cut-out trips then it all switches off.

The size and shape will house bonnet moulds & all the other parts I can imagine doing (hopefully I haven't overlooked anything).

Looking forward to attacking the backlog of parts I need to make for the rallycar!

Stuart

Not personally no, however I work with a load of laminators that started out there carrers in the late 70's an early 80's when carbon started to make it big in the motorsport world. And some of the setups they've told me about that various well known F1 teams & Group B rally teams devised were basically very similar to these box ovens.

This may be of some assistance: http://www.powdercoatoven.4t.com/Index.html

JZX World Forums

Hello all from rainy Southern California (yes, it rains here sometimes in the winter).

HI,

I like the idea of your long curing oven. 

To help with heat confinement, adding cement sheeting on the inside will do a heat barrier and heat diffuser as well. 

Cement sheeting will also make inside lot more robust to damage when manipulating item.

Make door with 3 step 90 degree (like Maya pyramid) with rubber or silicone seal at each step to make it air tight.