Tips and tricks for OCA and Loca repairs

Hey everyone, I have been doing phone refurbishing for a while and can't really deal with the prices of LCD's anymore. I want to start doing glass only repairs. I have done a few before without any tools or machines that came out well but I am going to get machines to do a larger scale. Does anyone have any tips for LOCA vs OCA? I know Loca is cheaper but I don't want to risk damaging the backlight, I have used loctite glass glue before and never had an issue. Does anyone know with OCA instead of buying an autoclave if I can use a heat gun and vacuum sealer? Any tips will be appreciated and please don't try and discourage me from trying because its better to try and fail then to never try at all.