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The principal difference between "out of Autoclave" and "autoclave CF work is that the Pre-preg CF used for Autoclave work, relies on the autoclave being able to produce a pressure on the CF layers in the mould that is higher than +1 Bar/Ato. Heating cycles and Ramping up of temperatures is needed in both cases .. using more then two layers of prepreg most often requires "bebulking" of the first layers, before adding more layers. often Autoclave Prepreg uses (or can use) a higher curing temperature ... The ramping up is required in order to first get the resin in the prepreg to flow and the CF layers to compress. If you go to full cure temperature too fast the resin will not have time to flow and the CF layes may not consolidate properly.
IMHO successfull "Out of Autoclave" prepreg work requires a properly controllable oven, with vacuum feed-through connectors.
Starting CF work using "out of Autoclave" Prepreg is perfectly possible, You will just have to accept wasting quite a bit of expensive Prepreg in geting to know the niggles with vacuum bagging, layup and mould work, without the the benefit of experience with the "wet" methods ..
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