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Blood Sweat Tears and Grease => Bodywork / Painting / Plating => Topic started by: randy lahey on Sep 20, 2016, 22:01:24

Title: Paint vs powdercoat....again
Post by: randy lahey on Sep 20, 2016, 22:01:24
Although I'm sure there's tons and tons of threads on paint vs powdercoat, I'm posting this for some advice on my specific situation.  I have a '74 CB360, and (obviously) I'm trying to decide between paint or powder.  I know a place near me that will powdercoat the frame and stuff cheap (cheaper than paint), so the argument is definitely for powder.

My only reason for considering painting the frame is because I got a little too loose with the grinder when de-tabbing the frame and now I have some divets in some rather noticable spots.  If I paint the frame , I could use some body fill over these spots.  Any advice?
Title: Re: Paint vs powdercoat....again
Post by: randy lahey on Sep 20, 2016, 22:55:25
To answer my own question, I think I'll try to smooth it out with JB weld and then powder coat.
Title: Re: Paint vs powdercoat....again
Post by: VonYinzer on Sep 20, 2016, 22:55:47
Fill them with JR Weld and file it smooth. Powder over it. Done. Just make sure that frame is 110% done before you send it out.
Title: Re: Paint vs powdercoat....again
Post by: MotoCafe on Sep 21, 2016, 10:42:35
Agreed, make sure the frame is COMPLETELY ready b4 getting coated. You will see every imperfection.
Title: Re: Paint vs powdercoat....again
Post by: o1marc on Sep 21, 2016, 17:21:17
I would talk with the coater before hand and discuss the issues. If he's a garage powder coater who's doing it really cheap you may find that corners are cut in the process. There are special fillers for powder coating and while JB Weld will do (I use it), your coater may have something else he prefers. Just make sure the frame is clean and don't worry about blasting it or anything. Normally blasting is provided in the cost of the coating. If it doesn't include blasting that's one of the reasons it can be done cheaper and I would shy away from that coater, cheap is not always better when it comes to powder coating. Find out what method he uses for plugging threaded holes and make sure you point out to him any holes or threads that need masking or plugging. Powder is almost always cheaper than paint when professionally done.
What's the name of the place that is doing it?
Title: Re: Paint vs powdercoat....again
Post by: VonYinzer on Sep 21, 2016, 17:43:42
Cheap work is rarely good and good work is rarely cheap, to paraphrase a sign in every tattoo shop in the country ;)
Title: Re: Paint vs powdercoat....again
Post by: lostboy on Sep 21, 2016, 22:20:24
Frig off Randy. No more hamburgers for you.


Powder all the way.
Title: Re: Paint vs powdercoat....again
Post by: advCo on Sep 21, 2016, 23:10:52
We all know powder is the answer, the price is what dictates the means. 

If you can get a good price on powder, do it. I build bikes on a budget so I generally paint myself. I've had experience with professionally powder coated commercial equipment, and I've chipped the stuff just as easily as I've had paint chip.

It's all in the prep.


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Title: Re: Paint vs powdercoat....again
Post by: randy lahey on Sep 22, 2016, 02:48:09
It's actually a mennonite (believe it or not) that has an industrial powder coating operation on his farm.  I've had the frame and stuff of my last bike, a zx6r, done there.  The final result is good, cost me $60, but they're no help as far as prep work, plugging and taping.  They just clean and coat.  I try to do as much work as I can myself, but still on a budget this is definitely cheaper than good paint supplies, nor do I have the experience, knowledge, or proper set up for a good paint job.
Title: Re: Paint vs powdercoat....again
Post by: lostboy on Sep 22, 2016, 11:44:08
It's actually a mennonite (believe it or not) that has an industrial powder coating operation on his farm.  I've had the frame and stuff of my last bike, a zx6r, done there.  The final result is good, cost me $60, but they're no help as far as prep work, plugging and taping.  They just clean and coat.  I try to do as much work as I can myself, but still on a budget this is definitely cheaper than good paint supplies, nor do I have the experience, knowledge, or proper set up for a good paint job.

Yeah a Mennonite that watches trailer park boys.
Title: Re: Paint vs powdercoat....again
Post by: VonYinzer on Sep 22, 2016, 11:49:40
Frig off Randy. No more hamburgers for you.


Powder all the way.

A mans gotta eat Ricky
Title: Re: Paint vs powdercoat....again
Post by: o1marc on Sep 22, 2016, 11:49:52
Now we are running into the issue that has given powder coating motorcycle parts a bad name. There is a huge difference between commercial powder coating and the custom show powder coating process. The commercial production outfits don't have to usually put out a finish that needs to last 10 years. Their warranty is usually only a year and that is usually dealt with through the retailer of the product. They don't use the usual steps required in prepping a part for it to be long lasting. Usually a chemical etch of some sort is used instead of media blasting. The chemical etch is extremely inferior in giving the part a text suitable enough for the power to adhere to for a long period of time. This is what you get when you hear people say they could get their finger nail under the powder and start flaking it off. The powders the commercial outfits use sometimes inferior to whats available for the custom market.
In your case, as I mentioned, if it's cheaper, it probably means steps in the prep will be left out. I would, if I were you , find someone to blast your frame before taking it to the coater. Find bolts to plug all your holes that need to be or you will be chasing every hole with a tap. Mask off every exposed thread. And DON"T HANDLE THE PARTS WITH BARE HUMAN HANDS after blasting them. I guarantee 90% of the bad stories you hear about powder coating are parts done by commercial outfits.
Title: Re: Paint vs powdercoat....again
Post by: lostboy on Sep 22, 2016, 11:51:23
A mans gotta eat Ricky
Lol
Title: Re: Paint vs powdercoat....again
Post by: randy lahey on Sep 24, 2016, 00:49:40
Well, I'm not building a custom show bike, and I'm trying to do as much work as I can myself so I can say I actually built the thing rather than just assembled it  :).  I have a sand blaster and will be blasting all the parts myself.  I had them coat my ninja frame a few years ago that I just chemical stripped the paint off and it's holding up just fine.  At the time I called around a few places and the price for just a frame and subframe was over $300 (not sure if that included blasting). So I'm sure this place isn't up to the same level as a more professional custom shop, but from what I've had done there, and for the price, it suits me. In the end, it will still be a better finish than anything I could ever paint.  More money saved = more money for cheeseburgers! ;D
Title: Re: Paint vs powdercoat....again
Post by: VonYinzer on Sep 24, 2016, 10:57:59
All you need.
Title: Re: Paint vs powdercoat....again
Post by: advCo on Sep 24, 2016, 13:38:53
I love that stuff. Used it on nearly everything on the XL. and you can brush it on pretty easily for touch up spots.

VHT epoxy paint works super well for adhering to plastic.

Budget coatings for the win.


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Title: Re: Paint vs powdercoat....again
Post by: Deviant1 on Sep 24, 2016, 18:29:56
My bike is currently rocking a 5 year old appliance epoxy paint job. The frame has been wearing it for 7 years. Proper prep is your friend.


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Title: Re: Paint vs powdercoat....again
Post by: randy lahey on Sep 25, 2016, 08:36:27
I actually do plan on using that on things I can't powder coat.  What prep work is necessary?
Title: Paint vs powdercoat....again
Post by: Deviant1 on Sep 25, 2016, 10:17:06
Same as anything; sand, clean (tack cloth, denatured alcohol with lint free cloth), don't touch, paint. The appliance epoxy takes a long time to gas out so leave it to dry a full 24 hours... Maybe more depending on temp and humidity.


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Title: Re: Paint vs powdercoat....again
Post by: randy lahey on Sep 25, 2016, 11:42:57
Primer?
Title: Paint vs powdercoat....again
Post by: advCo on Sep 25, 2016, 12:23:39
You can use it with or without primer, it sticks pretty well both ways.  I bead blast or soak in phosphoric prep and etch, rinse and dry, then hang and paint.

I've had parts that have stayed tacky for 2 days because of the humidity.

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Title: Re: Paint vs powdercoat....again
Post by: lostboy on Sep 25, 2016, 13:26:16
My bike is currently rocking a 5 year old appliance epoxy paint job. The frame has been wearing it for 7 years. Proper prep is your friend.


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Pj1 used to make the black epoxy and that stuff is still on my cb frame. Wish they made it in sliver matte or semi. Or just silver for that matter. I need to paint the case on this gl.
Title: Paint vs powdercoat....again
Post by: Deviant1 on Sep 25, 2016, 21:04:59
If you do prime I'd allow for plenty of time for the primer to cure and gas off. Also if you need to coat over the appliance epoxy after it has dried you'll need to wait 20 days plus. This stuff takes forever to cure out. This is bought experience. I tried to mask off and paint over a section that had cured for a week with awful results.


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