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geekhack Projects => Making Stuff Together! => Topic started by: TheVengeance on Wed, 01 June 2016, 11:33:42

Title: Can you increase the speed of resin curing?
Post by: TheVengeance on Wed, 01 June 2016, 11:33:42

Pretty simple question, if I make the room / mould slightly warmer will it cure faster?

I have a 3D printer with enclosure and heated bed, am considering just using it as a very tepid warm oven.

I know the silicone will be fine, will the resin have issues?

Title: Re: Can you increase the speed of resin curing?
Post by: eat_the_food on Wed, 01 June 2016, 11:37:18

Both polyurethane and epoxy resin are heat kick so yes the cure speed is a function of temp.

Title: Re: Can you increase the speed of resin curing?
Post by: TheVengeance on Wed, 01 June 2016, 11:51:34

Silicone as well?

I have the bed at 60 atm, so 140 in American money.

Just feels slightly warm to touch.

Title: Re: Can you increase the speed of resin curing?
Post by: Bambino on Wed, 01 June 2016, 11:52:41

Basically what ETF said. Also humidity directly correlates with cure rate for many resins and silicones.


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Title: Re: Can you increase the speed of resin curing?
Post by: sinusoid on Tue, 07 June 2016, 08:15:44

I suggest looking up the spec sheet for the resin/silicone, the manufacturer should have the cure/temp correlation available there. You'll get all the information you need for the particular chemistry you're using.

When increasing the temperature, you may experience more shrinkage from both the resin and the silicone, that depends on what you're using. This should be in the datasheet as well.