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Need a "Resin Exposure Finder" in firmware  

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nuroo
(@nuroo)
Reputable Member
Need a "Resin Exposure Finder" in firmware

There are countless brands of resin that respond to 405nm light. I thank Prusa for making profiles for some of the other popular brands besides Prusa's own resin.
Recently I have started trying to use other brands of resin. Currently I have to test one exposure per session on SL1. Testing 1 exposure per session is time consuming and expensive.
Several other manufacturers have a gcode instruction that test several different exposure times on a single build plate during a single print session. So a user can find good per layer and bottom layer exposure times quickly and efficiently. Something with tolerances, circles, towers etc. 
Is something like this used internally to test resins? We need a similar tool for SL1 - please.

In the photo i'm testing 3 different exposure times with a white resin on the lithophanes below. Each was a separate print, separate cleaning process.

7s

7.5s

8s

Photon users a have calibration tool

Formlabs resin printers also have a method

Surely Prusa can develop something for us.
https://github.com/prusa3d/Prusa-Firmware-SL1/issues/6

Prusa MK3 preassembled (R2/B6) > (R3/B/7)
Prusa MK2.5 kit > MK3 > MK3+MMU2 (R3/B/7) 😀
Prusa SL1 3D printer + Curing and Washing Machine (day1 order)
Taz6
CR10s4
Delta 3ku

Posted : 15/10/2019 1:55 am
nuroo
(@nuroo)
Reputable Member
Topic starter answered:
RE: Need a "Resin Exposure Finder" in firmware

So apparently SL1 has some sort of resin calibration built in to firmware already. Just there's no official STL or a official how-to. A gentleman on Facebook looked through the source code and was able to figure out a few things. He's already figured a few things out and did some test prints:

https://m.facebook.com/groups/1942730525817950?view=permalink&id=2562694483821548

You'll have to join the Facebook group to see the PDF instructions. (I'm on my cell, can't link the instructions directly)

Just sharing to get more eyes/minds on this.

 

Prusa MK3 preassembled (R2/B6) > (R3/B/7)
Prusa MK2.5 kit > MK3 > MK3+MMU2 (R3/B/7) 😀
Prusa SL1 3D printer + Curing and Washing Machine (day1 order)
Taz6
CR10s4
Delta 3ku

Posted : 16/10/2019 8:40 pm
cerium136
(@cerium136)
New Member
RE: Need a "Resin Exposure Finder" in firmware

Hi,

I have put together a quick PDF guide. One thing not mentioned is that you have to replicate the object you want to test into each portion of the build plate yourself, then add the configuration in the config.ini.

SL1_Resin_Calibration_Mode

Posted : 16/10/2019 9:11 pm
nuroo liked
nuroo
(@nuroo)
Reputable Member
Topic starter answered:
RE: Need a "Resin Exposure Finder" in firmware

@cerium136

You are the man. Thanks for sharing, and thanks for the write-up.

Prusa MK3 preassembled (R2/B6) > (R3/B/7)
Prusa MK2.5 kit > MK3 > MK3+MMU2 (R3/B/7) 😀
Prusa SL1 3D printer + Curing and Washing Machine (day1 order)
Taz6
CR10s4
Delta 3ku

Posted : 16/10/2019 9:17 pm
nuroo
(@nuroo)
Reputable Member
Topic starter answered:
RE: Need a "Resin Exposure Finder" in firmware

AnyCubic White

Did some testing. Tested 4 exposures

calibrateTime = 0.5
calibrateRegions = 4
calibrateInfoLayers = 10

4 regions.
7.5 starting exposure
0.5 increment
9.0 ending exposure
10 info layers

Prusa MK3 preassembled (R2/B6) > (R3/B/7)
Prusa MK2.5 kit > MK3 > MK3+MMU2 (R3/B/7) 😀
Prusa SL1 3D printer + Curing and Washing Machine (day1 order)
Taz6
CR10s4
Delta 3ku

Posted : 17/10/2019 3:39 am
abdulbasitzia
(@abdulbasitzia)
New Member
RE: Need a "Resin Exposure Finder" in firmware

@nuroo and @cerium136 How did you manage to do this. I did everything in the writeup by @cerium136 (thanks for that, really appreciate it). but the Prusa Sl1 printer gets stuck in reading the project file.  Any help from you guys will be great.

Posted : 23/12/2021 9:50 pm
Doctorlu
(@doctorlu)
New Member
RE: Need a "Resin Exposure Finder" in firmware

I am trying the Tool that offers this youtube video.Greetings,Luciano

Posted : 02/01/2022 11:34 am
Yveske liked
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