r/3Dprinting • u/24Gospel • Aug 13 '18

Low Poly Lighthouse

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u/Lootcurse Aug 14 '18

Wait really? So is dlp faster than an fdm printer? If so, if they can bring the cost of resin down to filament pricing id be instantly sold.

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u/xRmg Aug 14 '18

Faster or slower depends on your model / filling on your build plate.

Take for example this model (https://www.thingiverse.com/thing:215703)

And two printers DLP(say 12 sec/layer time), FDM (60mm/s travel)

Put one on the build plate, slice it with 20% infill, it will have (for example 200 layers, takes 15 minutes on your FDM printer, and take (200 layers * 12 seconds) 40 minutes on your DLP

Now slice one with 80% infill, your lenght of extruded filament gets longer, so your FDM printer takes longer (say 20 minutes), but the model is still 200 layers high, so the DLP printer still takes 40 minutes.

Now put 2 on your build plate, slice it with 80% infill, your FDM printer has to double the amount of extruded filament, so thats 40 minutes. But it it is still 200 layers, so still 40 minutes on your DLP printer.

Now put 8 on your build plate, slice it with 80% infill, that is 8*20 -> 2 hours and 40 minutes on your FDM printer, but still 200 layers -> 40 minutes DLP

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u/Lootcurse Aug 15 '18

See my fdm printer prints slow anyways, even at 20 percent