Nice Mark, where did you get them done?
Sure... Here ya go..
I took a few items to the blasters mainly to find out how it handled different substrates and scenarios. The results were amazing. This was a demo and very little time was spent on each sample, It was just to show general capabilities of vapour/wet blasting, without going into the 75 finishes I was told obtainable, SMH..
The cover took about 4 minutes to reach that condition from the state in was in. I took the cover to see how to deal with cleaning to an OEM finish whilst preserving what I assume is the original sticker from when the engine was removed 30+ years ago. Whilst being carful over the sticker, one swipe across with the jet bought it back to the condition shown, no damage whatsoever! With more time on the cover itself the remaining patina and some discolouration you can see on the cover and steel bracket would be easy to removed, but this had already been demonstrated on another part.
The fan was in an awful state and having spend ages manually cleaning the fan on my 260 I was interested how it handled plastic and steel. There was no burring or smoothing of plastic edges, the same with the oil cap, immaculately clean with no smoothing of edges. Again with more time on the piece (about 3 to 4mins spent in the demo) I'm confident the remaining rust pitting in the edges would removed/cleaned, leaving the little "F" stamp on the steel undamaged. To remove the pitting itself, then with care near plastics and stamps aluminium oxide can be used to smooth surfaces or in the case of bad pitting dry blasting still seems the way to go as far as my research so far tells me.
Lastly, with the engine cover, this took about the same, 4-5 minutes to reach the level in the photo. It's not perfect, but again a little more time I'm confident an OEM finish easily obtained.
With Addison's Z, my aim is to try to get as close as possible to an OEM finish (if anyone could direct me to an engine paint code or source, that would be great?..) and wet blasting seems the way to go. Whereas with my 260, I want to retain patina and yet to really assess wet blasting, I'm guessing one just uses a softer medium and less time under the jet.
I was told that to finish the cast parts, oven dry and then a coating of silicone spray.
Some sad news today, my pal, Frosty (the cat) went blind yesterday. Took him to the vets this morning and they suspected renal failure (results back already and kidney's are good), heading back again this afternoon for some more tests on his thyroid.. He's nearly 17, still a character and its possible a quality of life is still to be had. Apparently cats cope well with blindness, so long as he has quality in life, not in fear and not in pain. The next few days will see me off the garage project and shoring garden fences so he has a safe place to pee.. Never thought I would, but I welled up in the surgery this morning, the nurse sympathetically passing me a box of tissues a few seconds later!.. IDK, I must be going soft in my old age..
That'll be what ya get with too much beer and smoking I told him...