Originally shared by iDig 3D printing
We now have some Extruder springs for #RepRep #3Dprinters in stock:
https://www.idig3dprinting.co.uk/shop/spares/reprap-extruder-springs/
when fully loaded they have a maximum load of ~33N
The product page has the full spring specifications so check with your build requirements before ordering.
https://www.idig3dprinting.co.uk/shop/spares/reprap-extruder-springs