You know, I owe my wisdom to the many, many, many mistakes I've made over my life. Well today I got wiser again😉
As an earthling trying to take responsibility for his planet, I have been experimenting with water based paint for speaker building, (against all my hard learned experience.)
Well, today I tried putting a water based enamel paint on top of a water based latex sealer/primer (Zinsser) What a botch! Lummy!
So I hereby claim the title of worst paint job ever!
As an earthling trying to take responsibility for his planet, I have been experimenting with water based paint for speaker building, (against all my hard learned experience.)
Well, today I tried putting a water based enamel paint on top of a water based latex sealer/primer (Zinsser) What a botch! Lummy!
So I hereby claim the title of worst paint job ever!
Attachments
Very nice... been there done that a few too many times in my life.
I never have taken a picture of my finish mistakes, usual start swearing immediately then go grab the palm sander.
I never have taken a picture of my finish mistakes, usual start swearing immediately then go grab the palm sander.
The "worst" paint job I ever did was a metallic blue paint job on my parent's car. Ford had a couple of years where the primer and paint were incompatable and the paint would start peeling off. I had to strip the whole body to the bare metal and start over with good products. It came out OK, but it was the most labor intensive paint job I ever did, and I had foolishly volunteered to do it for the cost of materials.
Live and learn,
TerryO
Live and learn,
TerryO
Smashing Paintcans
Had to spray about 2 dozens of speaker base plates (ran small series at that times). Everything nicely prepared, sanded, fillered, sanded, sprayed ... as always. Looked good but..... somehow felt uncomfortable though. After a few hours I noticed the stuff won`t cure in some way and the surface had weird kind of pickles. It was more like rubber and could be rubbed off quite easily also. I thought I maybe catched a dirty (oily or whatever) rag to wipe clean. So everything once again but before had to strip the mess. Now took extra care that everything was alright.
Then..... same thing again.
After the third try and wasting almost a day..... still the SAME 🤐.
Suddenly I got so short-tempered
that I 
ed the remaining full can against the wall.
I felt so greeeaaaaat
....... until it hit the wall 
and broke up (of course) and all the (black) waterstuff covered the garage and lots of tools (compressor etc.).
It took several hours to clean up this mess and to paint the walls again. Never figured what was wrong.
So water based, by all means, not for me anymore, at least not for painting😀
Sorry, no pictures...
Yeah, water based paint, tried it long time ago. An experience which I`ll never forget.
Had to spray about 2 dozens of speaker base plates (ran small series at that times). Everything nicely prepared, sanded, fillered, sanded, sprayed ... as always. Looked good but..... somehow felt uncomfortable though. After a few hours I noticed the stuff won`t cure in some way and the surface had weird kind of pickles. It was more like rubber and could be rubbed off quite easily also. I thought I maybe catched a dirty (oily or whatever) rag to wipe clean. So everything once again but before had to strip the mess. Now took extra care that everything was alright.
Then..... same thing again.
After the third try and wasting almost a day..... still the SAME 🤐.
Suddenly I got so short-tempered
that I ed the remaining full can against the wall. I felt so greeeaaaaat
....... until it hit the wall and broke up (of course) and all the (black) waterstuff covered the garage and lots of tools (compressor etc.).It took several hours to clean up this mess and to paint the walls again. Never figured what was wrong.
So water based, by all means, not for me anymore, at least not for painting😀
Sorry, no pictures...
10 cans of Duplicolor "Midnight Blue" on a silver 88 Bronco II.
Looked ok at night. That was about it.
Looked ok at night. That was about it.
my mother had a 1971 Super Beetle that had faded yellow paint, and she wanted a purple metal flake paint job, so she bought a few cases of Krylon purple metal flake and a few cases of Krylon clear enamel. we spent a whole weekend, first sanding enough to let the paint get a good grip (no, we didn't re-prime it first), then carefully putting the purple paint on, and then the clear enamel. it actually came out looking good. the paint held up well to the elements for a couple of years. then came the repaving of Rte 128 (in Massachusetts) and they stripped off two layers of asphalt and put down sand on the rough road surface. after a month of driving on that, my mother's paint job started to wear off in a few areas and the yellow started to show through. we joked with her about her "Martian Camouflage" paint job. a side note.... after the paint job was done, there were several cans of the purple paint and the clear enamel left. i was building a bass guitar, and the body i had got from a friend had been given a real hack flat black paint job. so i sanded it down to the wood and put 5 coats of the purple metal flake on ti, letting each coat dry for a few days each coat. then i put several coats of clear enamel on it. i then went and bought a piece of blank pick guard laminate and cut out a rather odd shaped pick guard (there was a section of the wood that had been filled with plastic-wood putty, and just refused to sand flat, so i covered that section with the pickguard. after mounting the pickguard, electronics and a big heavy adjustable bridge, it looked ok, but i didn't like the glaring white pickguard. i wanted something different. my brother had a sheet of holographic plastic laminate., so i cut a piece of it for the pickguard and put it on. i was thinking if it looked tacky i'd take it off and try to find a black pickguard for it. it actually looked pretty good a metal flake purple bass with a diffraction grating pickguard. i even built the active electronics for it, with an interesting phase control for the neck pickup using a dual linear taper pot and a 3 band eq (lifted from NS's app notes, but with all of the time constants shifted down an octave). unfortunately, that guitar got stolen while i was in the army, and so now i look for another vintage Hagstrom bass neck to build another one with.... this time without the diffraction material. it looked great at the time, but i'll probably try the black pickguard this time, and probably a dark blue paint.
I had build a pair of speakers with dynaudio drivers, MTM config, constraint layer with heavy bracing.
I sprayed on eight coats of paint, each sanded with #400 sandpaper in between - the last coat was perfect, piano gloss, and I left the shop with the feeling of a job well done. Some beautiful speakers.
That night my shop burned down....
I sprayed on eight coats of paint, each sanded with #400 sandpaper in between - the last coat was perfect, piano gloss, and I left the shop with the feeling of a job well done. Some beautiful speakers.
That night my shop burned down....
worst paint job i ever did was my first bass cabinet.... it was actually 2 cabinets bolted together. a sloped front cabinet from a no-name bass amp with an acoustic suspension 12" driver (the driver was a really nice driver, but the cab was cheap and too small. the lower cabinet (which really was too small) was a split cabinet that came from a cheap radio shack "PA-in-a-box" that had a 25W amp that came in this split cabinet with a 12" driver in each half. i got rid of the cheap 12's and put a piece of plywood inside one half to block it off. i then cut out the front for a 15" Jensen driver i got in trade for some gadget or other. i mounted the 15 in the front half, i put 2 bolts up through the top of the box and secured them with rubber cement. then stuffed the box with a mixture of open cell and closed cell foam (did the same with the cab for the 12). i sealed the edges where the halves of the PA box met with weather stripping and secured the halves together. then i mounted the sloped box on top of this and secured it using the bolts. i sealed the back of the sloped cab. before mounting the drivers permanently i spray painted the whole assembly flat black. there was a blue vinyl covering on the bottom cab that didn't take the paint very well, but i painted the whole thing. the plywood on the sloped cab soaked up a lot of paint, and looked horrible as well. after i got the drivers wired and mounted it sounded ok. not great, just ok, but i didn't really care, i had put together a workable bass cabinet, and it looked horrible, but it made the house shake without cone breakup and i was happy....
I don't feel too bad about hijacking this dead thread🙂 Anyhoo, I have a question about recoat wait time...
I have used a black oil based spray paint about 43 hours ago. The instructions say to wait 48 hours at 70 degrees before recoating. It would be nice to spray the final urethane coat over the paint later today (after 46 hours) due to a tight schedule, project goals etc... Any experience with cheating a couple of hours and how did it come out? It's been about 73-74 where the paint has been drying so maybe the process has accelerated a bit?
I have used a black oil based spray paint about 43 hours ago. The instructions say to wait 48 hours at 70 degrees before recoating. It would be nice to spray the final urethane coat over the paint later today (after 46 hours) due to a tight schedule, project goals etc... Any experience with cheating a couple of hours and how did it come out? It's been about 73-74 where the paint has been drying so maybe the process has accelerated a bit?
OMG, deja vu -- i spray painted my mother's 1963 Plymouth "Candy Apple" blue -- but ran out of money before I could finish the job. These were hot colors in the 60's.
I did get that car over 90 mph going downhill to a game at Ohio U. As a parent, i'm happy your kids don't tell you everything they do.
My nephew accidentally tossed a rag soaked with acetone onto the hood of his dad's car (Chevy Monte Carlo) and was lucky enough to live.
If you have followed the instructions on the can concerning the environment then chances are good that the recoat can happen long before the 48 hours is up. They have to allow for the worst case scenario when selling their product or they would end up with a lot of returns.
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