Announcement

Collapse
No announcement yet.

Black dots in the cast aluminum

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Black dots in the cast aluminum

    I am still having a problem with cast aluminum, such as intake manifolds. I am getting black dots impregnated into the aluminum that are showing quite vividly after PC'ing. I use 80g alum oxide, my air is super dry and clean. Please help.

    Thanks in advance,
    Deke
Working...
X