Guys your molds for pre -pregs made from : polyster resin, epoxy, vinylyster? or anything more? as i know polyster molds that lots of do they from polyster but that holds not more then 60 celcius.

I cook pre pregs at 100 deg C all the time with quality polyester tooling system.

http://www.nuplexcomposites.com/australia/?q=node/22

who more done from what resins molds? as our polyster resin hold up to 60 degree as you know like simple resin that normally making bodykits from molds with fiberglass.

and what i understood dont need to buy autoclave or to make it. simply need box metal with spirals that hold good heat inside and temperature sensor and controller. from outside sitting easycomposites vacuuming pump and vacuuming black color hose that hold   temperature and not melt.

Make an insulated box from materials that can handle your cure temp, set it up with heating elements and controller. Search the forum for controller info.

My oven is steel skinned polyurethane foam 2" thick. 4m long x 1.1m wide x 1.1m high.

Most would use silicone hose and quick couplings for the vacuum hoses.

thanxs i was thinking of steal sheels that 2-3mm thickness of wall and to put like sandwich inside soft thing that uses for house building.

You should try to minimise the amount of steel used (3mm is thick!) as you will need to heat that too and this will considerably slow down how fast your oven can heat/ramp up as well as costing you more to heat.

Mine is pre made insulation panel with just 1mm skins. This type of panel or construction is best. Depends what's available to you.

so you think best 1mm walls? any photos of your owen?

 




Air is drawn in to the fan and down behind the alloy sheet that is open at the bottom then onto/over the elements so there should be a rotational kind of flow within the oven. There are two of those fans and 4 vacuum hoses. The oven now has three elements instead of two as it was in these photos. Originally it was single phase but this was just not enough power so it became three elements and now 3 phase power.

This is a refrigeration type panel but these are commonly only polystyrene core which I do not feel is adequate for 100C.

My oven is polyurethane core and I believe it came from Wales. It was some of the left over bits from a big warehouse job.

It has bars that sit on the angle section so I can top load the oven with smaller parts or the whole front also opens so that I can cook our small boats too.