I am having a terrible time getting parts for the Pitch channel to print in a usable form. They start out great but about half way through a multiday print they start to ward and break loos from the print bed in areas. The part that I have been working with is "(27) Lower Pitch Arm" and so far I have been through a whole roll of PLA trying to get a good one. I have tried Skirt, Brim and Raft adhesion and printing both sides on top as well as using both the old and new Cura profiles that Karl provided. I probably have 10 attempts at printing so far, some fail early on and some take more than a day to show failure.
For specifics I am printing with an Ender 3 V2 and a glass bed sliced with Cura and I check bed levelness (and cleanliness) before the prints. I am working with 100% infill per the Print Guide which is why I am using up so much time and material. The temperatures are 215 for the head and 70 for the bed.
My best success has been with the raft adhesion but with several MM's of print material the part will warp upwards around an edge, usually near the middle section. The surface becomes rough and irregular once the part starts to warp and the printer start to make noise when the head hits an area that is warped upwards. If the part is thin enough the print head will actually press it back down to the buildplate momentarily and I get a nice ripping sound as the pressure in that area is relieved and it tears loose again.
This image was taken tonight with the part almost 3/4's complete. The difference in the shade of the raft section shows just how much has come loose from the buildplate. Also you can see the irregularity in the upper surface. That odd gouge through the material that trails into a long string going off the bottom of the image was the result of pausing the printing. The print head stayed at its current height and then melted its way through a raised area and left the string of material behind as the back pressure on the head was relieved. It took almost two days to get to this point so it was a real waste of time and material. What you are looking at should be the outer surface of the assembled part so no way as smooth as it should be or has been on other parts with large surfaces. Towards the left you can see the edges of the support structure along the bottom of the part which represent the slight cutouts the part has.
So with all of this information does anybody know what I am doing wrong?