Couple of questions related to the Mk1
Hello,
I'm relatively new to 3d printing and have been trying to calibrate the mk1 for a month(been busy doing other commitments).I have a couple of questions.
1)When trying to calibrate the printer?I know that there should a "slight friction" between the paper and the extruder.However, I would like to ask to compare this friction to something(like moving a paper under a cup.)
2) Would a unclean glass plate for the bed affect the calibration?
3)Would it be best clean off dried up abs juice and gluestick and just put a fresh layer of gluestick for PLA filament?
Thanks. 😀
Re: Couple of questions related to the Mk1
Hello,
I'm relatively new to 3d printing and have been trying to calibrate the mk1 for a month(been busy doing other commitments).I have a couple of questions.
1)When trying to calibrate the printer?I know that there should a "slight friction" between the paper and the extruder.However, I would like to ask to compare this friction to something(like moving a paper under a cup.)
2) Would a unclean glass plate for the bed affect the calibration?
3)Would it be best clean off dried up abs juice and gluestick and just put a fresh layer of gluestick for PLA filament?
Thanks. 😀
1) It's quite difficult to think of a good analogy! The drag of a cup is too much I can say that. If you very slowly adjust the corner you're calibrating you will notice that as the nozzle just starts to touch the paper you will feel a slight change as you move the paper around, like a roughness? It's something you will learn as you gain more experience.
2) Yes, a dirty glass plate can cause problems as you need to calibrate the distance between the glass plate and the nozzle, not lumps of glue!
3)It's always best to start with a clean glass plate and only use gluestick or ABS juice if necessary. Fresh gluestick should be such a thin, even, layer it won't affect calibration as that IS what you want to calibrate the nozzle to.
Re: Couple of questions related to the Mk1
When you are doing calibration, would you just slowly move up (using the calibration wheel) and just keep moving the paper until you start feeling a little friction? ❓
Re: Couple of questions related to the Mk1
It's not a rocket science. 😉 There is no exact setting for everyone. Every printer is different and there are too many different conditions to be taken into account. Just do some first adjustment "on paper" and then do next adjustments based on printed results.
Just remember to always keep the bed level - the gap must be the same regardless horizontal (X,Y) position of the nozzle. If this is achieved, make only Z-endstop adjustments (if available) or the same adjustments in all corners.
Re: Couple of questions related to the Mk1
If you use a steel ruler and a flash light, it is easy to measure(see) how bent the glass plate is. Just point the flash light at the steel ruler from behind - in the direction to your eyes. Do this in a dark room and you may judge how bent the glass plate is in different directions, by looking at the light seeping through the column between the glass plate and the steel ruler.
I found that my glass plate is formed as a horse saddle(exaggerating). There is a sweet spot formed as a 150 x 150 mm area, where the glass plate is pretty flat(approximately less that 0.05 mm level difference between various spots).
💡 By knowing how the glass plate is formed, there is a better possibility to calibrate the printer correct and not be mislead by good calibrations on some spots and another time the calibration is out of tolerances(just because the glass plate happens to be 0.x mm higher/lower on various spots.
/Henrik