@DjDemonD:
@NoSkillzEngineer:
@DjDemonD:
I'd be suspicious of the bed not being very flat my bed is 6mm cast aluminium machined tooling plate and a 2040 frame. I get 0.004 deviation using smart effector.
Rolled aluminium especially 2mm will deform when heated.
Oh I know the bed isn't particularly flat, got a new bed on order but hoping bed mesh compensation could do a good enough job. I think effector tilt may or may not be responsible for some of the error. I'm thinking of machining my own bed and using a heated chamber…I'll do it on my CoreXY instead though I don't feel like making an enclosure for this Kossel.
Thing is, the calibration routine presumes the bed is flat, although it can be tilted if using 8 factor - S8. So to achieve a really low calibration deviation you need to be calibrating onto a flat bed. If you aren't then any level of precision in your build will not give you single micron deviation values. Grid/mesh compensation can reliably enable full bed printing.
Good news! I got the new bed in which appears to be much flatter and much thicker Al heat spreader! I still have to bore the holes out for 5mm screws but it should product a better result later tonight.
It is worth noting that I have been cheap and have not changed my Buildtak sheet which is sorta…kinda...super marred haha so....yeah. I have made some foolish mistakes.
Another good thing that happened is that my friend gave me a very precise mini protractor that I can use to measure effector tilt!
quick question...how exactly is each axis defined? Does the axis start from the tower and directly outward so that they meet in the middle creating the (0,0)? This might seem like a dumb question, the reason I ask is because the digital protractor only measures one direction at a time. For better understanding, on a Cartesian machine if I was leveling the bed I could only do X + and X - at a time.
This is the tool I was given: https://www.mscdirect.com/product/details/73896714
It was free so I am hoping this is precise enough to do what I need it to do.
So my question is: Can I use this to measure each axis individually for effector tilt well enough? It is worth noting that I would have to remove the hot end and place it directly on the effector and stack my 1" spacers on each other to use as a probe surface against the underside of the effector, taking into account the minor tolerance stacking of my spacers. I would calibrate it, measure the length of the hot end, then install the tool head and reset the zero verifying by measuring the offset with calipers.
I was thinking eliminating the tool head might make measuring the effector tilt easier since each spacer is 1" tall and is about 1.651" in diameter. The Dia doesn't matter but it is wide enough to tell whether the effector is flat against it or not.
