nanoDLP

lawgicau

Member

Registered: 2017-12-13

Posts: 6

NanoDLP Dynamic Curing/Speed/Lift Guide

Had my D7 for less than two weeks. As a very experienced FDM user it was humbling to have so much to learn about DLP. This group and the NanoDLP forum have been crucial in me overcoming the learning curve.

Dynamic cure time, lift speed and lift height are seen as witchcraft by many, but I think they are a must to run an efficient printer.

https://docs.google.com/document/d/1ySV … sp=sharing

The above link has example scripts for dynamic calculation, with examples on how they work and a guides on how to alter them to your needs. There is some background theory on why you would use them too. Hopefully it removes the barrier for most users.

Please enjoy, feedback an suggestions are welcome!

elshad66

Member

Registered: 2017-03-31

Posts: 118

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

Thank you very much ,, much needed textbook

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,546

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

It looks awesome. I will put the document link inside nanodlp on-screen help.

oliveenchine

Member

Registered: 2016-03-11

Posts: 26

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

This is really Wonderfull , works like a charm on my small machine, would you give the method you used to calculate the magic number ? I'm working on 2 different machines : a very small one 50x50 mm @ 36µm and a huge one based on 15.6"LCD .. I sure some modification of "The 0.087 Constant" would be necessary .
anyway really really nice work !

georgei

Member

Registered: 2017-09-30

Posts: 21

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

Hi lawgicau,

Any fast way to calculate the minimum - maximum exposure times?

How you have calculate yours?

George

cuddlycactus

Member

Registered: 2018-04-06

Posts: 1

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

Wow, lawgicau. I'd bake you a cake if I could! Thanks so much for a well written and tremendously needed resource!

lawgicau

Member

Registered: 2017-12-13

Posts: 6

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

Hi guys, thanks for the compliments.

I worked out the magic number with a spreadsheet and the formula plugged in. I had a target max and min I was aiming for, so put these in and then changed the magic number until I got a logarithmic curve I was happy with.

I'm now on Youtube, and will make a video about this and post it up in this forum at some stage.

oliveenchine

Member

Registered: 2016-03-11

Posts: 26

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

Thanks a lot for your work ,
I did made a small tweak by adding the "ceil" function for the lift speed and most importantly for the lift height in order to get "full" steps :

lift speed : {(([[LayerNumber]]<=2)*40) + ([[LayerNumber]]>2) * (ceil(80-60*(0.087*(log([[TotalSolidArea]])))))}
lift height : {(([[LayerNumber]]<=4)*8)+([[LayerNumber]]>4)*(ceil(100*(2+6*(0.087*(log([[LargestArea]])))))/100)}

Having a full step Z resolution of 10µm this works just fine for me , you may need to adjust the 100* and the /100 in order to match their Z resolution .

jaidek

Member

Registered: 2016-11-19

Posts: 29

Re: NanoDLP Dynamic Curing/Speed/Lift Guide

This is fantastic and working very well!

I do have a question though, is this process scalable to multiple copies of the same object on a build plate? Or really only beneficial for single objects?

Last edited by jaidek (2019-01-02 04:14:16)