While things are progressing a bit slower than originally planned on Tessie's hardtop refinish, I believe they'll work out in the end after this week. Since last posting, prepped and ready for sealer and top coat, I started experimenting with the Raptor material as well as my equipment. It quickly became apparent that both my compressor and a neighbor's borrowed compressor were not going to be up to the task, even with my bargain basement LVLP gun (more on this later).
I needed something ASAP, so did some poking and settled on a locally available quiet Husky unit. Due to my living conditions (garage included), I need to be very mindful of other tenants, and dB reduction helps. Mixed feelings on the brand overall but initial fire up and testing would indicate it's on the manufacturer's numbers for performance so I'm happy with it for now.
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I should say more than happy as I just finished spraying the epoxy sealer with it and it had no issues supporting the spray gun. My days of spraying cars ended before HVLP guns were much of a thing and now there are LVLP options as well, which is what I ended up with. The somewhat unfortunately named InoKraft Drizzle D1 actually performed well above expectations for an $80 spray kit. Drizzle it did not. Running a 1.5 cap and needle, it put down the epoxy quickly and evenly with minimal overspray. Plan is to use a 2.0 setup for the thinned Raptor (hopefully tomorrow).
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Bonus, also found a very local source for things like gun sprayable epoxy, etc. When I stopped to pick up the epoxy and activator, turns out they have a tint rack in house and can mix up any auto paint my heart desires. I see some PX8 base coat in my future for the half door project, no more ordering online.
I accept that it's unlikely anyone here was on the edge of their seat regarding the refinishing of my hardtop, but I'll share an update anyway.
I did manage to spray the thinned Raptor material since last posting, suffice it to say the top is now black and textured. However, not all sunshine and puppy dog tails...yet. Two issues need to be addressed before I can finish things off properly.
Let there be light. My facilities are undeniably limited and cramped but I'm managing alright, though I found it very hard to see while spraying, especially on the sides and on the second coat overall. Too damn dark. I grabbed some relatively inexpensive 4' LED fixtures at the local Ace Hardware and screwed them to the side walls about 3' off the floor. Should help with the vision, methinks.
Molasses in an Alaskan January. Maybe a bit unfair, but even thinned 20% the Raptor is still quite viscous. I'm using a gravity gun and a disposable cup system that came with. Very easy cleanup, but if used frequently it would be wasteful. In the case of spraying this material with a very short pot life, I'm fine with it. Anyway, the lid of the cup system (which is actually the bottom of your cup when spraying) has a filter screen built in, well had, I cut it out because it's too fine to allow the Raptor to flow properly. A side affect of this was, towards the end of each coat, the gun would start spitting large globs of Raptor material as it sucked the contents out of the cup. Not ideal. But since some asshole cut the filter out...
Fortunately, the gun will also accept a standard gravity cup filter, unfortunately, those tend to be quite fine as well. After a bit of a search on the interwebs I found some DeVilbiss 600 micron (0.6 mm orifice) cup filters, so we'll see if that sorts out the chunks. If all else fails, I might just whip up a design and 3D print some with even bigger holes, though might be diminishing returns on that.
I'll need to scuff the current top coat before respraying since it's well into curing. Plan is to respray this weekend. Pretty happy with the material overall, just need to feel out the quirks of working with it.

