Just bought a second hand Dell 2400MP DLP Projector so I can make a bottom

3D Printing
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Just bought a second hand Dell 2400MP DLP Projector so I can make a bottom up SLA 3D printer. Once the printer arrives I’ll knock a design up in cad and let the fun begin. Only thing to work out is what to use for the base of the resin tank and whether I can find it in Australia.

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Or perhaps a top down printer using FEP film to control the resin tank surface tension. Both styles have pro’s and con’s, just need to weigh them up

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After some though I leaning to wards top down as there will be less risk of failed prints and reduced costs of rebuilding resin tanks all the time. I will use 1st surface mirrors to reflect the image to keep the overall height down, glycerin in the resin tank to save on needing so much resin, an FEP barrier film on top of the resin to keep the level height correct and even resulting in better prints, a peristaltic pump to drain the resin tank when a colour or resin type change is required and other stuff that is a little more boring.

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@Ashley_Webster Thanks Mate

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the Projector has arrived and works great so that is good. Now to draw something up in CAD

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Modified the projector yesterday removing the colour wheel, focus stop and UV filters. This gives me a print are of 130 x 110mm at the shortest focus distance. Might add an IR filter to the projector but that will depend how much I can get one for.

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Dear Brad, I hope you are doing well, I just bought a Dell 2400MP projector too, after I removed the uv filter (9mmX 9mm iridiscent squared glass) in front of the bulb and replaced with common glass, the projector just lasted 10min on and then it suddenly shut down due to overheating, Did you have any similar issues? Regards! (Note: Color Wheel was also removed)

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Hi Mauricio, no mine did not shut down but I will test for a longer duration tonight for you. Perhaps the cooling fan in your unit has become weak or dirty?

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Thanks Brad, the fan was a little dirty, that could be the reason, also I noticed the squared glass I used to replace the IR/UV filter was broken (probably caused by thermal shock) so maybe hot air was scaping to other sections of the projector.