Mounting the print platform (bed) onto springs can help safeguard against damage should the bed crash into the nozzle - even more important when the bed is glass.
You do not want the springs to bee too weak otherwise they will compress from the weight of large models as it is being built and affect the layer the height. Too strong and they will not protect against damage.
These springs are 4.8mm diameter, 3.3mm bore, length 8mm (uncompressed), force required to compress 3mm is over 4kgf and for 1mm is about 2kgf.
Supplied in packs of 4 springs.
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