@Silly_Savage This vendor sells sleeves / spacers in a few sizes.
https://www.ebay.co.uk/itm/M8-Clearance-Stainless-Steel-22mm-O-D-washer-spacer-sleeve-PICK-LENGTH/282625428878?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D20191002094254%26meid%3D5e0e1bd4239043a8a69fe3b5ca6acdc1%26pid%3D100889%26rk%3D1%26rkt%3D6%26sd%3D282625428702%26itm%3D282625428878%26pmt%3D0%26noa%3D1%26pg%3D2332490&_trksid=p2332490.c100889.m5204
Cheers. I did design an axle which would be the neatest solution, but the local machine workshop wanted £100 to make them! I'll drop him a line and see what he can do.
@Polygon started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@Silly_Savage This vendor sells sleeves / spacers in a few sizes.
https://www.ebay.co.uk/itm/M8-Clearance-Stainless-Steel-22mm-O-D-washer-spacer-sleeve-PICK-LENGTH/282625428878?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D20191002094254%26meid%3D5e0e1bd4239043a8a69fe3b5ca6acdc1%26pid%3D100889%26rk%3D1%26rkt%3D6%26sd%3D282625428702%26itm%3D282625428878%26pmt%3D0%26noa%3D1%26pg%3D2332490&_trksid=p2332490.c100889.m5204