I have had some success after sorting out loose power connection and other minor faults but I am having some trouble with the first layer which has sections that are lifted. I would like to include a photograph for you to see but can’t work out how to do that. Can anyone help please?
Upload the picture to an image hosting service or dropbox and post a link.
Here is a picture of the first layer printed this afternoon.
[quote=“John”]Here is a picture of the first layer printed this afternoon.
[/quote]
Looks like you’re extruding too less material or your nozzle height isn’t correctly set.
cheers,
Christian
I´ve had the same problem. Solved it by lowering the z-axis a little bit.
As the calibration is quite tricky, you can use something like thingiverse.com/thing:400280 (not perfect, but simple). I also tend to move the z-axis by hand after RepetierHost has homed it after having started the print.
Remember that the head moves up a little bit before printing the first layer. So, it should be close to but not touching the heated bed.
I had the same problem, and got it sorted by extruding less filament.
I have now also set the speed for the first layer to 50%.
In a similar case I am now experiencing, it seems like the temperature needs to be a little bit higher than before, although it´s the same filament just in another color. Though, this concerns the upper solid layers.
[quote=“larsen”]I have now also set the speed for the first layer to 50%.
In a similar case I am now experiencing, it seems like the temperature needs to be a little bit higher than before, although it´s the same filament just in another color. Though, this concerns the upper solid layers.[/quote]
It is normal that different filament colors need different temperatures, even if they’re from the same brand.
Thanks for your advice everyone. I did the things you suggested and also found that cleaning with Acetone prior to each print really helps. I think that the blue tape must have a residue from the adhesive that reacts badly with the molten filament.
Things are much improved, just need to solve the offset in X which occurs randomly and ruins the prints. 
Don’t touch the heatbed with your fingers!
It will cause the filament to bend up, looking similar to your case
Yes, I now understand how important it is to clean the bed. I wipe with Acetone before each print.
The random jumps seem to be down to too high a vibration setting I have reduced this to 10Hz with great improvement. I am printing items with thin walls and the infill movement was setting up very severe vibrations.
Im having similar problems, can someone post the curaengine settings? There are too many and im a little lost… I dont know what shall i modify…
thx
Try setting the reference voltage for the stepper motors to 0.55 do not go above 0.6
Recently I was suddenly confrontated with a very bad adhesion of the first layer, although I was sure that the flat bed was clean. In the first instance I thought it was related to the cheap filament I was using. However, after some time it becomes better. And at the moment it is as good as usual. One reason could be a bad section in the filament. However, my most reasonable explanation is that I have contaminated the filament before it enters the extruder. I am used to take of some windings to prevent broken filament and it is good possible that my vingers are greasy at that moment.
A lesson is that you have also taken care to handel the filament with very clean fingers (or perhaps using gloves), e.g. when loading it into the extruder.