Is perfectly perpendicular frame critical?  

Re: Is perfectly perpendicular frame critical?

Depends how anal you are. I couldn't live with myself.
If you're the type that can let it go then it shouldn't be an issue.

Re: Is perfectly perpendicular frame critical?

as long as your printer always "finds" the 9 calibration points without any problems it's not critical.
ok, the correction during print will require some computing power at the rambo board... but until now*) i haven't noticed a difference in the printing times.

*) had a skewed bed at my second printer for about 2 weeks... until i was able to fix the problem.

it's more important to make sure that the z-axis is perpendicular to the x/y plane (printbed).
the x/y/z calibration test only can detect whether x and y are perpendicular... and it can detect the modulation of the x/y surface in z-direction (required for meshbed leveling).
but the test can't detect whether the z-axis is perpendicular to the printbed or not. if you have a close look at the messages, the printer only gives you statements about x and y beeing perpendicular or even (slightly) skewed. there's nothing mentioned about z !

Re: Is perfectly perpendicular frame critical?

Should I correct the frame?
Just be warned that making the printer frame perfectly perpendicular can be quite tricky task. I know people who actually made things worse while trying to get it perpendicular.
No problem if you know what to do.

Re: Is perfectly perpendicular frame critical?

Should I correct the frame?
Just be warned that making the printer frame perfectly perpendicular can be quite tricky task. I know people who actually made things worse while trying to get it perpendicular.
No problem if you know what to do.
Thank's for the heads up, but I already unlocked this achievement:

Re: Is perfectly perpendicular frame critical?

I have a follow-up query.

Does the printer need to be completely horizontal? Right now Z-frame is held above ground with two nuts and it kind of bothers me; this is unnecessary stress. I would love to put something below Z-frame to keep it up, but that can put whole printer on a slight angle.

Re: Is perfectly perpendicular frame critical?

The surface must be flat to preserve geometry of XY frame, but it doesn't need to be horizontal (I mean water level).

Re: Is perfectly perpendicular frame critical?

I have a follow-up query.

Does the printer need to be completely horizontal? Right now Z-frame is held above ground with two nuts and it kind of bothers me; this is unnecessary stress. I would love to put something below Z-frame to keep it up, but that can put whole printer on a slight angle.

Absolutely no need to support the Z frame. If you look at the many anti-vibration feet out there, you only need 4, one at each corner which raises the Z frame even higher (and they do a very good job...).

Peter

Re: Is perfectly perpendicular frame critical?

Horses for causes, I believe in getting the X Y and Z axis as best aligned as possible. That way the nine point pinda sensor is only adjusting for a possible uneven bed. And maybe rendered superfluous. I own printers that once manually levelled do not need adjustment for many months maybe years. My Ultimaker 2+ was levelled once last year. It is still perfectly level and gives me perfect prints like my Prusa I3 MK 2 with 9 point pinda sensing.

I needed a bigger build base, something Josef Prusa has ignored. I recently bought a Hictop CR 10 with a build base of 300mm x 300mm x 400mm. Via Amazon Prime here in the UK, with next day delivery. It is good printer and is a Creality CR10 lauded by many well known pundits on youtube. It is manually bed levelled. And gives fantastic prints. The CR10 is of course a Prusa I3 clone. I can scale up easily further if I desire, mainly in my need in the y axis, mods I can do easily with the CR 10.