PEI coated flexible spring steel sheets are the next generation in 3D printing platforms, providing optimal adhesion for a wide variety of materials as well as the flex-ability for quick and easy part removal once printing has finished.
The PEI coating eliminates the need for old fashion, messy and time consuming first layer adhesion strategies such as:
- glue sticks
- kapton tape
The black PEI film layer on the spring steel flex plate becomes sticky to 3D printed materials when hot (at your regular printing temperatures) and self releases printed parts when cool. On many occasions your parts will literally pop off the plate once cool – all on their own!
If they don’t, just flex the plate to remove them.
PEI coated spring steel plates work straight out of the box with many 3D printing materials including, but not limited to:
- Carbon fibre blends
- and others
Some engineering grade materials like nylons will require a 3D printing adhesive such as Vision Miner Nano Polymer Adhesive to ensure parts adhere to the flexplate.
If a loss of first layer adhesion is occuring, a wet wipe with IPA with paper towel or lint free cloth will remove dust / dirt / debris / fingerprint oils and restore adhesion. We do this ourselves and recommend a wipe with IPA after every print to ensure optimal and consistent first layer adhesion on every print.
Do not use acetone to clean the flexplate.
Flex plate magnets:
Our PEI spring steel flex plates are supplied on their own. They do not come with a magnetic sheet included.
In our experience many of the magnets bundled with PEI coated flex plates have been subpar and will demonstrate a significant loss in magnetism over time – especially when repeatedly printing with materials that require a high bed temperature such as ABS.
The side effect of a magnetic sheet losing it’s magnetism is that a part being printed in a material that is prone to warping (such as nylons and some ABS blends) – will start to lift the flex plate off of the magnet during printing and result in a poor quality or failed print.
This is why we specifically sourced and offer Graviflex – a high temperature, high quality magnetic sheet that is rated to sustain full magnetism at a continuous operating temperature of upto 120c.
You can find it here:
HIGH TEMP MAGNETIC SHEET – GRAVIFLEX® 200
Caution – Configure and set your first layer carefully! :
- Incorrectly set offsets and first layers that are too close can result in printed parts adhering too much. If care is not taken during the printed part removal process, the PEI coating layer can come off with the 3D printed part.
- The risk of printed parts adhering too much and damaging the PEI coating is magnified with materials such as PETG / PCTG / TPU
- If offsets are even further misconfigured or a nozzle crash/drag occurs , you will damage the PEI film coating of the flex plate.