Hello, I have read or maybe heard that after sanding 2K primer, you must spray the next product whether it is more 2K, sealer, or base within 24 hours otherwise the 2K "heals" and fills in the sand scratches. Is this correct? I am slow and it takes me a while in order for me to be ready for the next step (sometimes on the order of months)
So my questions are, is there a time window that after one product is sanded that the next step needs to be sprayed,
1. Bare metal sanded with 80 to epoxy?
2. Body filler on top of epoxy sanded with 180 to more epoxy?
3. Epoxy sanded with 180 to 2K?
4. 2K sanded with 600 to epoxy mixed as sealer?
Does it depend if the prior product is fully cured like epoxy at 20 days? If once the product is fully cured and will not shrink, you can apply the next product at any time (weeks to months) after properly sanding?
So my questions are, is there a time window that after one product is sanded that the next step needs to be sprayed,
1. Bare metal sanded with 80 to epoxy?
2. Body filler on top of epoxy sanded with 180 to more epoxy?
3. Epoxy sanded with 180 to 2K?
4. 2K sanded with 600 to epoxy mixed as sealer?
Does it depend if the prior product is fully cured like epoxy at 20 days? If once the product is fully cured and will not shrink, you can apply the next product at any time (weeks to months) after properly sanding?