Prints are not in contact with the print bed  

RE: Prints are not in contact with the print bed

Posted by: @harry6217

The bases of the printed items are not completely attached to the print bed. 

 

MagSensorBody-70462001 5-PiecesNew

What type of filament are you using?

Check the first layer calibration.

If you are using ASA or ABS, try an enclosure and a full height draft shield. Print Settings | Skirt and Brim | Skirt | Draft Shield.

That will result in less warping and pulling off the bed.

Regards,

Mark

RE: Prints are not in contact with the print bed

Filament is Hatchbox ABS (I do have Prusament ABS also). This may be a stupid question but when you are talking about an enclosure could it be something so simple as a large cardboard box?

RE: Prints are not in contact with the print bed

Just google for 3D print warping and you'll see thousands of comments and suggestions. My standard copy-and-paste:

It's common for large box-shaped/rectangular objects to warp. Assuming Live Z is well calibrated and the steel sheet is clean (using hot water and fragrant-free dish washing soap), here are a few approaches that have worked for me (copied/pasted from previous posts):

• Slow down print speed.
• Add Mickey Mouse ears to the corners. There's a "helper disk" in PrusaSlicer's Add Part library but I prefer to simply add a cylindrical, maybe 10mm diameter, change height to single layer height, then place the part at the corner. Repeat for each corner.
• Add a brim around the model, 5 mm or more. Wider or 2 -layer high brims may be needed but may not work with the size of the model or may require being added in your CAD software.
• Use Layerneer Bed Weld ( https://www.amazon.com/Printer-Adhesive-Layerneer-Original-Filament/dp/B079984GV5/ ), Magigoo, etc. You only need a thin layer.
• If you have design control over your part and it's possible considering the intended use, you can try to round the edges and/or add holes to the base of the model.
• Combination of above.
• Usually, brim/ears does the job, or some Layerneer if needed, but large, rectangular objects can be a challenge. Also, drafts can encourage warping, so printing in an enclosure (with doors open for PLA) may help.

RE: Prints are not in contact with the print bed

A large cardboard box would do!

Joan

RE: Prints are not in contact with the print bed

Thank you for the suggestions. Will try on the next run.

RE:

The only issue with a cardboard box is if the print comes completely off the bed and you get a spaghetti monster (google that) you won't see it. An Ikea Lack table and 4 pieces of plexiglass works great. There are threads on enclosures.

ABS is particularly sensitive to warping and an enclosure is a major help.  I fear that if you continue without one you will continue to have problems. ABS is also very smelly and the fumes are bad for you. I hope this is in a ventilated location.

Regards,

Mark

RE: Prints are not in contact with the print bed

A lack enclosure would be ideal, but to solve your not seeing it issue just cut a hole in the box to view thru and just reattach the piece as a flap with some tape.  Then you can keep an eye on it.

Good luck. 

RE: Prints are not in contact with the print bed

Do yourself a favor and use ASA instead of ABS. Same properties but UV resistant, smells less, and prints much more nicely.

RE: Prints are not in contact with the print bed

Posted by: @fuchsr

Do yourself a favor and use ASA instead of ABS. Same properties but UV resistant, smells less, and prints much more nicely.

+1 to that. My ASA prints come out pretty well using stuff on the list from @fuchsr, skirt and brim, and the enclosure.

On the box enclosure, just cut a hole and tape a piece of plastic wrap over it to see what is happening.

Regards,

Mark