We use the Dow 1-2577 also, and have had success in reducing the cure time by heating with humidity (as this is a moisture cure product). As the cure time is greatly thickness dependent you should try the process on a small number of boards first. If "bubbling" is present then you may need to increase the air dry time. The general process goes something like this: - Dip - air dry approximately x hrs (depends on thickness) - Oven cure @60C 50%RH for 1 hrs (or more, thickness dependent) Do not use the 80C as suggested in the Dow Q1-2577 Specs. - Stand 4 hours. I would suggest talking to Kelly Wall at Dow Cornings Customer Support tel: (517)496-6546, he was most helpful in our situation. Good luck, Brent Benjamin G. Thomas wrote: > > We currently run a PCB coating system using Dow 1/2577 conformal > coating. > Our complete curing cycle runs 24hrs. > I am looking for ways to decrease the curing time. > > I would greatly appreciate any suggestions. > > Here's some more information for reference: > We use two application techniques: > 1.) Hand Dipping (complete submersion) > 2.) Dispensing with a PVA1000 > Total coating thickness required is approx. 50mils, PER our > environmental requirements. > Hand dipping requires 3 separate coats to achieve this thickness. > PVA1000 dispensing only requires one coat, but each side still needs to > be cured for 24hrs. > PCBs are handled manually, and cured on drying racks in a hooded area > with forced ventilation. > Hand-dipped boards then go through a lengthy "unmasking" procedure to > trim and remove excess coating. > > -Benjamin G. Thomas > > ################################################################ > TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c > ################################################################ > To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: > To subscribe: SUBSCRIBE TechNet <your full name> > To unsubscribe: SIGNOFF TechNet > ################################################################ > Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. > For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 > ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################