Preheating of the resin.  

RE: Preheating of the resin.

Most of the data sheets have an operating temperature range. The thicker the resin, the more lower temp affects printing. I keep my studio around 68°F, and have never had issues with viscosity at that temp. Once you start dipping into the 50°F, then it will start to have an effect I've found

RE: Preheating of the resin.

Manufacturer does not specify optimal temperatures for a printing unfortunately. There is only data on viscosity relative to resin temperature.

The question is - what viscosities are optimal for printing? If a test print needs to be done, at what resin temperatures? For example, in the PRUSA profile, only the exposure time for each layer is specified in the material profile's main characteristics.

As it has been determined, the resin temperature plays a crucial role in print quality. Questions remain - Where is the information on resin temperature in PRUSA profiles? How is the resin temperature maintained or regulated during printing? After all, if the resin is preheated, it cools down quickly.

RE: Preheating of the resin.

Not really sure, I only know that in most cases, low temps can cause the resins to behave outside of the print profiles - which can lead to failed prints. Have you hopped on a chat with prusa? they tend to be quite knowledgeable about these things and could at least advise you on Prusament resins. I suspect that consumer resins have a greater tolerance for temperature variance because it's a lower strength than industrial resins. I think the margin of error is smaller on those prints. 

RE: Preheating of the resin.

Do you print yourself with PRUSA resins? Do you? After trying it once, I don't want to do it again.The odor is terrible, and even after printing, the product still smells strongly. I don't recommend it to anyone.

RE: Preheating of the resin.

Yes I use Prusa resins - and yes the oder is pretty strong. It does go away after some time once the resin fully cures. I use a carbon filter extraction set up that helps reduce a lot of the odors from resin printing, so not too bad. I have my SL1S in my studio a few feet away and the odor is rarely detectable. 

RE: Preheating of the resin.

It is interesting, I am building a plexiglass hood right now too and would like to cover the printer on top and build in a carbon filter. I am not more concerned about the odor during the printing process, but after printing in the finished product. I've had an item printed with Prusa resin for 3 weeks now and it still smells strongly. For example, the item I printed yesterday with BASF resin had almost no odor at first. That's the difference.