Tc":2wbvr2eq said:Got a quote to anodise a frame today from them £150!
Tc
nevadasmith":2j1z12kv said:Thanks for all the responses chaps - I'll try that place in Bristol
66 triumph daytona":hocb6zzz said:Ive restored a few vintage motorcycles and dont sandblast anything pre powdercoating,as mentioned before bead blasting is the way to go.
Grit (sand)blasting is used for industrial applications such as gates,RSJ etc.Its an aggressive way to remove rust,weld slag and other contaminates pre galvanising or powdercoating,its finish is very rough and a lot of heat is generated from the process(so much so it can destroy and warp thin gauge sheet metal and softer metals like aluminium).Grit blasting is never used by classic car/motorcycle restorers due to this.Grit blasting also leaves residuals that are impossible to fully get rid of.Glass bead/vapour blasting is the preferred option.integerspin":1stdnank said:66 triumph daytona":1stdnank said:Ive restored a few vintage motorcycles and dont sandblast anything pre powdercoating,as mentioned before bead blasting is the way to go.
I would say the opposite, grit blast is perfect for pre powder blasting.
Why would you go with bead?
66 triumph daytona":39utrqcg said:Grit (sand)blasting is used for industrial applications such as gates,RSJ etc.Its an aggressive way to remove rust,weld slag and other contaminates pre galvanising or powdercoating,its finish is very rough and a lot of heat is generated from the process(so much so it can destroy and warp thin gauge sheet metal and softer metals like aluminium).Grit blasting is never used by classic car/motorcycle restorers due to this.Grit blasting also leaves residuals that are impossible to fully get rid of.Glass bead/vapour blasting is the preferred option.
Nope,all grit media-walnut shells,iron etc are bad news for restoration.I cant think of a single car or motorcycle restorer that grit blasts,in fact the ideal method is a chemical strip.My first restoration was on a Norton and had the frame walnut shell blasted,never again,I was ages picking bits out of the swing arm pivot and headtube.My current Triumph had its components bead blasted and it was far easier with a better finish.If anyone wants 100% peace of mind they should consider cghemical stripping.integerspin":1p6bigkm said:66 triumph daytona":1p6bigkm said:Grit (sand)blasting is used for industrial applications such as gates,RSJ etc.Its an aggressive way to remove rust,weld slag and other contaminates pre galvanising or powdercoating,its finish is very rough and a lot of heat is generated from the process(so much so it can destroy and warp thin gauge sheet metal and softer metals like aluminium).Grit blasting is never used by classic car/motorcycle restorers due to this.Grit blasting also leaves residuals that are impossible to fully get rid of.Glass bead/vapour blasting is the preferred option.
I think you have chilled iron in mind, chilled iron is fantastic for heavy stuff but pretty much useless for light stuff and no good for aluminium even heavy aluminium parts. It has good cutting ability and plenty of mass.
When I say grit I mean aluminium oxide[basically hard sand], it cuts and leaves the
ideal surface for powder.