SV3DPrinter

What kind of Problems with LCD Resin 3D Printers? Different ways to fix it? Safety features

Posted on August 16, 2019 Updated on May 21, 2023

What is your comment?

Please read safety things before printing anything –
It is hazardous and may give you an allergic reaction you don’t want (been there and still got a skin problem), but it’s not toxic, or sometimes it can be.

Respiratory Irritation
Breathing highly concentrated epoxy vapor can irritate the respiratory system and cause sensitization. Serious health problems can result from sanding epoxy before it is fully cured. When you inhale these dust particles, they become trapped in the mucous lining of your respiratory system. Because it can cause eye, nose, and throat irritation. And dust from polyurethane resin is highly toxic.
Pure epoxy resins are considered non-toxic, and the risk of damage caused by ingesting epoxy resin can be very small. Most curing agents in use today have specific toxicity. Inhalation of epoxy resins causes no problems as they are not volatile.
The difference is that SLA works by flashing a tiny dot of concentrated light — across a given area to harden it and create a layer. In contrast, DLP machines cure all areas of a layer simultaneously by projecting light onto the resin in the shape of that layer.
We can use liquid resin to produce 3D prints. Since we are dealing with a liquid material, an additional support structure is necessary for overhanging parts and cavities. The average 3D printer material cost for standard SLA resins is approximately $50 per liter. That means entry-level, cheap resins may even be under $50. MakerJuice offers a standard resin for SLA 3D printing, which costs $58 per liter.
Many resins are toxic; we wrote about this some time ago. … However, remember that some resins ARE safe; it’s just that many are not – and they should be treated appropriately. The second issue with resin 3D printing is curing, which makes the resin solid.

Comments from the video,
Luis Rios
One day ago
The LCD screen is a consumable item, and it is not covered by the warranty on most manufacturers. They are not meant to last forever, although I have found that they are very sensitive. You need to strain the resin after every print, as any dried resin left in the vat will damage the pixels when the next print starts.
Luis Rios
22 hours ago
@ualdayan I have six resin printers and have been through the rounds. The LCD screen is consumable. That has been stated to me directly by the manufacturers. If you read the fine print in the warranty, you will also see that stated. The life expectancy of an LCD screen is supposed to be close to 800 hours. I have never gotten close to that.
CHEP
18 hours ago
Great information. LCDs are very temperature sensitive, so maybe that is an issue.

StevesPropShop
One day ago
As stated by others below, this concerns UV Exposure and heat. Be wary of ‘high-speed’ resins. They have a higher exothermic reaction rate which can also damage the LCD. Using an infrared thermometer, I tested ‘AmeraLabs’ AMD-3 LED resin, a super fast cure resin (2.5 sec per layer at 0.03), and it was curing at nearly 54 degrees Celsius on my mars. When the LCDs are made, they are supposed to have a UV filter film added to lengthen their lifespan, which they can’t do for these printers. I had screens last month and screens last week. There’s nothing you can do to affect it other than use standard curing resins that don’t give off as much heat and make sure you do regular checks to ensure your vat and build plate are clean, etc.
zemerick13
15 hours ago
@Dean Rockne As someone that has built PCs…often quieter fans are the better ones. Better bearings, lower turbulence, and more efficiency make the fan quieter for the same or better cooling.
If heating manages to be a problem, it’d be nearly instant spot heating…which would be practically impossible to cool. You’d need to chill the resin in the reservoir so that any temperature increase is offset…and I don’t think the resin would respond too well to that. You’re supposed to keep them at room temperature.
Redemptioner1
13 hours ago (edited)
It’s a simple problem; the screens are not designed to work with UV light, and the product of cheap printers uses cheap screens. You are looking at over USD 1000 wholesale for a screen rated for the UV light to fit these printers; that’s a lot of $30 screen replacements.