Looking for first timer test print feedback
hi all, i would appreciate some feedback on how my test print looks.
thanks for taking the time to reply
RE: Looking for first timer test print feedback
Top layer looks okay - not perfect, but a good start. A view of the bottom layer is more important. Try printing and showing a Benchy from a few angles, too.
The top looks like you are having some extrude variation, with a bit of under fill her and there, maybe caused by insufficient tension on the Bondtech idler. Do you hear any clicking while printing? That'd be another sign of a tension issue. Though, this can also be caused by a rogue spool of filament that has a stretched and undersized length during manufacture.
RE: Looking for first timer test print feedback
Try to use larger image sizes. I can barely make out the tiny default size!
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Looking for first timer test print feedback
In the image upload area, there is a control Link to: - change it from None to Media; that allows us to zoom in on posts.
@Bob - I've pretty much given up on helping in this forum - it's just to painful. Simple changes to defaults are being ignored by the dev team; and they are doing nothing to actually improve other functions that would require design time. Such a waste compared to the old forum.
RE: Looking for first timer test print feedback
hi gents thanks for attempting to help. i have printed out a benchy, photographed with natural light ( properly sized and linked accorsing to above thanks ). Again appreciate anyone taking the time to help out a true novice to both printing and forums.
Also, as an aside. i dont actually think its a particularly bad setup, just get the feeling it could be tweeked and improved a bit?
belt tension 265 & 270 btw.
RE: Looking for first timer test print feedback
Your layer one looks a bit off - it needs to be squished a bit more: no gaps between traces. Search for Jeff's "Life-Z Adjust" thread [sic].
The displayed belt tension numbers are meaningless. The only way to know belt tension is to measure it with the deflection method. With the extruder far left and bed far rear, use a trigger or fish scale and apply about 8 ounces of lift to the lower belt - the belt should deflect upwards about 15/64" ...
And it looks like you had a minor shift on the benchy. That could be belts, gears, or stiff unlubricated bearings.
First place to look are the gears: these are often improperly installed. Prusa doesn't really explain how to tighten the set screws. Here's my procedure.
Flat First: Drive gears must be tightened flat-first.
1) Start with both set screws fully loosened so the pulley is free to spin on the motor shaft.
2) Align one set screw dead center with the flat on the motor shaft, slowly tighten the screw until it fully contacts the flat surface.
3) Torque the flat set screw to spec.
4) Now tighten the jam set screw, and torque it to spec.
Once tightened, never touch the flat set screw unless the jam screw is first fully loosened.
Why Flat First? Set screws have flat ends. If you tighten the jam screw first the set screw on the shaft flat doesn't fully contact the shaft, only one small edge of the screw surface is biting. Reversing torques can easily shift the shaft to a position the flat screw no longer contacts the shaft. This lets the jam screw wriggle loose. And after a while, vibration loosens the screws until the gear is free to rotate.