This is another in my series of Calibration models.

Problem

If you are experiencing bed adhesion problems, poor first-layer quality, or weird textures, you may have a problem with the bed.

These problems could include:

• Uneven bed
• Cleanliness of bed
• Worn texture (if using textured bed)

If you are experiencing a problem, the quickest way to get an answer is to print a large flat sheet of exactly one layer of material.

Commercial License

Do you want to sell prints of this model? Purchase a membership from my Patreon to obtain a commercial license.

Solution

You can easily make one of these yourself in Bambu Studio, but, if you are too lazy, unaware, or just love that some idiot (me) did the work for you - then use one of my test prints.

Just choose the test that suits your printer from the profile list:

• A1 mini
• A1
• P & X series (excludes the unprintable area)

Results

Types of outcome:

• Perfectly flat print with no noticeable distortion, or rough surfaces, and appears to be the same thickness across the entire plate.
  No action is required - all is well.
   
• If your print has rough edges or portions of the print.
  Clean the plate.
   
• You have print lines that do not adhere to their neighbour.
  Clean the plate.
   
• The print appears lower in sections or towards one or more sides.
  Bed-level issue or the plate isn't correctly placed on the printer.

How to clean the plate

If there isn't anything noticeably dirty on the plate, a simple but thorough clean with warm water and dish soap, followed by a full cleanse and wipe down will usefully fix the problem.

If there is an obvious build-up, you may need to use isopropyl alcohol. Be careful when using this, follow all instructions on the container and give it a good rinse afterward.

Repeat the test and if all is good, continue printing. If not, reclean with more vigour.

Bed-level issues

You may have turned off the auto bed leveling before print. For the small amount of time the process takes, the few minutes of delay is well worth the 10-hour print that fails.

Check you haven't accidentally placed the plate above the positioning marks (depends on the printer) and that it is straight (front to back) and straight (side to side).