I often mill very small parts from aluminium - objects with a mass of around 5g or less.
If the object has flat or chamfered edges, I usually sand them by hand which is very time-consuming and finally I may give the parts a 'chemical polish' by immersion in boiling phosphoric acid.
If there are protrusions or recesses in the part's design, this presents a real problem to get a perfect and even surface finish.
I looked a bit at various sandblasting diy sites and the media (glass beads, silica sand and walnut kernel particles) and also the health risks associated with diy sand blasting.
I believe Builders Warehouse has a diy kit. I haven't looked at it yet but web comments seems to indicate it's total rubbish.
Has anyone any experience of this type of surface finishing?
mafioso
If the object has flat or chamfered edges, I usually sand them by hand which is very time-consuming and finally I may give the parts a 'chemical polish' by immersion in boiling phosphoric acid.
If there are protrusions or recesses in the part's design, this presents a real problem to get a perfect and even surface finish.
I looked a bit at various sandblasting diy sites and the media (glass beads, silica sand and walnut kernel particles) and also the health risks associated with diy sand blasting.
I believe Builders Warehouse has a diy kit. I haven't looked at it yet but web comments seems to indicate it's total rubbish.
Has anyone any experience of this type of surface finishing?
mafioso
