Anyone out there had trouble with 4140 CV from Chemcraft having a really fine grit in the product? It seems like there is sand in your finish when you lay it down. The finish tech was just here and we are not sure what happened.
From contributor S:
Isn't that comforting, when the tech isn't sure? Did he bring new product (different batch) to see if it may be the product you have? Most of the time, issues such as these are solvent related. Is it a Chemcraft reducer you're using? Are you spraying with an AA? Is it happening on whatever substrate you spray onto and with all your spray equipment? Has your compressed air been checked?
1. Obtain clean glass or metal plates. Wash with thinners to remove any surface contamination.
2. Dip plate in product ready for application and check for contamination.
* If no contamination found, check equipment or application environment. See (7).
* If contamination found, see (3).
3. Dip clean plate in uncatalyzed, unreduced product.
* If contaminated, change batch of material and contact your local paint representative.
* If no contamination is found, see (4).
4. Dip clean plate in catalyzed, unreduced product.
* If contaminated, change batch of catalyst and contact your local paint
* If no contamination is found, see (5).
5. Dip clean plate in catalyzed, reduced product.
* If contaminated, change to new thinners.
* If no contamination is found, see (6).
6. Remix material, original product had external contamination.
7. Check oil lines and water traps for build up and drain appropriately. Respray and check for contamination.
* if contaminated, see (8).
* If no contamination is found, begin regular maintenance of lines and traps.
8. Spray clean plate with mixed material.
If contaminated, see (9).
9. Spray clean plate with mixed material and transfer immediately to non-connected area.
* If contaminated, see (10).
* If no contamination is found, problem concerns environment when drying. Possible contamination from air intake or make up.
10. Transfer mixed material to alternate area and respray with different equipment.
* If contaminated, see (11).
* If not contaminated, then problem is with spray or pump equipment. Contact your local equipment representative.
11. Neither product nor equipment appears to cause contamination. Problem could be nonlocalized airborne contamination or airline contamination. Contact your local paint representative for assistance.