Powder coating - safe?

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW

Powder coating is surely safe if done by people who know what they are doing. I wonder if these guys would be happy sharing some techniques which could be passed on to a UK company, I’m sure they would get enough work from forum members.
 

Monkeyboypaul

Site Supporter
May 29, 2013
4,824
2,916
113
Riccall, North Yorks.
Alias
Paul G
Are you getting speaker panel coated? That would look niiice

Not sure i agree - in my personal opinion removing the dmd panel would be a faff as there's a little plaque on there and presumably some hinges, the barrel lock, screen etc. plus if it's a glossy colour it could easily draw attention away from the lovely translite artwork a bit. Legs, rails and lock down is very easy to do, and really frame the cabinet & particularly the playfield nicely, complimenting the right game. Hinges also look good, and probably the trickiest bit of the process (though not really tricky at all).

TopTip: don't install mirror blades before doing powder coating your backbox hinges, as you need to access the little hinge bolt which will be sitting behind them on the Stern cabinet. Powder 1st, Blades 2nd.


Powder coating is surely safe if done by people who know what they are doing. I wonder if these guys would be happy sharing some techniques which could be passed on to a UK company, I’m sure they would get enough work from forum members.

They were helpful when i asked what colours they used for Iron Man and Metallica.
 
  • Like
Reactions: Sako-TRG

RudeDogg1

Registered
Dec 27, 2012
8,247
1,834
113
42
Barnstaple, Devon
Not sure i agree - in my personal opinion removing the dmd panel would be a faff as there's a little plaque on there and presumably some hinges, the barrel lock, screen etc. plus if it's a glossy colour it could easily draw attention away from the lovely translite artwork a bit. Legs, rails and lock down is very easy to do, and really frame the cabinet & particularly the playfield nicely, complimenting the right game. Hinges also look good, and probably the trickiest bit of the process (though not really tricky at all).

TopTip: don't install mirror blades before doing powder coating your backbox hinges, as you need to access the little hinge bolt which will be sitting behind them on the Stern cabinet. Powder 1st, Blades 2nd.



They were helpful when i asked what colours they used for Iron Man and Metallica.

Just to clarify I was on about his custom lazer cut speaker panel not the standard one
 

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW
Not sure i agree - in my personal opinion removing the dmd panel would be a faff as there's a little plaque on there and presumably some hinges, the barrel lock, screen etc. plus if it's a glossy colour it could easily draw attention away from the lovely translite artwork a bit. Legs, rails and lock down is very easy to do, and really frame the cabinet & particularly the playfield nicely, complimenting the right game. Hinges also look good, and probably the trickiest bit of the process (though not really tricky at all).

TopTip: don't install mirror blades before doing powder coating your backbox hinges, as you need to access the little hinge bolt which will be sitting behind them on the Stern cabinet. Powder 1st, Blades 2nd.



They were helpful when i asked what colours they used for Iron Man and Metallica.
Great tip, jeez wouldn’t have thought of that.
If you don’t mind me asking matey :-
- Where did you buy your lollipop armour rails for your Metallica
- what’s the colour code for your Metallica (Purple)
- It looks like the guy your using to powder coat has the skills to do the job. What was his turn around time - I’m assuming he’s based down South, can you share details?
Cheers
 

Monkeyboypaul

Site Supporter
May 29, 2013
4,824
2,916
113
Riccall, North Yorks.
Alias
Paul G
If you don’t mind me asking matey :-

No, i don't mind at all & you're not the 1st to ask either :)

- Where did you buy your lollipop armour rails for your Metallica
- what’s the colour code for your Metallica (Purple)
Cadbury purple. Don't know the RAL code.

- It looks like the guy you're using to powder coat has the skills to do the job. What was his turn around time - I’m assuming he’s based down South, can you share details?
http://raw-wheels.co.uk/ based just south of York, 10miles north of me, or about 150 miles South East of you (in DG12?). About £10 an item, thereabouts.
I'd expect any powder coating service near you would do a similar job though, this was their 1st and possibly only 'Pinball' job.
 
  • Like
Reactions: Hullshark

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW
No, i don't mind at all & you're not the 1st to ask either :)

- Where did you buy your lollipop armour rails for your Metallica
- what’s the colour code for your Metallica (Purple)
Cadbury purple. Don't know the RAL code.

- It looks like the guy you're using to powder coat has the skills to do the job. What was his turn around time - I’m assuming he’s based down South, can you share details?
http://raw-wheels.co.uk/ based just south of York, 10miles north of me, or about 150 miles South East of you (in DG12?). About £10 an item, thereabouts.
I'd expect any powder coating service near you would do a similar job though, this was their 1st and possibly only 'Pinball' job.
Awesome - cheers mate, that’s really helpful :)
The purple looks awesome on MET
 
Last edited:

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW
Gents,
After doing a bit of research and speaking with my local powder coater, here’s some useful info:-

Main reason for warping:-

  • Wrong size / type of media used during blasting causing impact damage
  • Too close to metal work during blasting causing heat and impact damage
Glass media is less likely to cause damage to thinner sheet metal used at correct angle.

I got my Powder Coat Guy to media blast the hinges and legs and then use chemical striping of the Stern Black Crinkle finish using Methylene Chloride on the side rail armour and lock down bar to play it safe.

Don’t try and powder straight over the Stern existing finish as the powder won’t bond properly, really needs the bare metal to give better result otherwise it gets messy.

I found this is the safest way to prevent any kind of warping.
Hope this helps.
Some pics attached.
53105EC5-AAF8-48CA-AFF9-A3B2C383C3DA.jpegF6769CA2-A4DB-432E-99ED-BB3D55A21D88.jpeg370DD33C-F44A-4852-9289-EF54D55D4693.jpeg708768D0-71FF-4387-87E5-40EB349F29E7.jpeg45E06A36-373E-4356-805A-4E787BD41FCF.jpeg9D74CDB0-ECA8-40C7-BCA6-8208281A5804.jpeg
 

Pick Holder

Site Supporter
Jul 18, 2016
3,043
2,303
113
51
Bournville, Birmingham.
I do not see any reason why information needs to be passed from Pinball refinery to a UK powder coater.

The good guys know what to do.

As with decaling a cabinet - it is preparation. Stated earlier on this page - the stern finish needs blasting off first.

Have used a couple of companies in Birmingham for powder coating and had great results on custom chassis for guitar amplifiers.

Not sure on having coin doors and speaker panels done....
 

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW
@Pick Holder I also messaged Steve at Pinball Refinery as I was curious....he was kind enough to respond with some helpful info:
They don’t use chemical stripping (due to regs in US) and don’t use blasting to remove the Stern Finish as the primary removal method to mitigate warpage. They bake off the original coating at 800 degree Fahrenheit.
 
Last edited:

MartinY

Site Supporter
Nov 18, 2017
1,346
824
113
Hampshire
Gents,
After doing a bit of research and speaking with my local powder coater, here’s some useful info:-

Main reason for warping:-

  • Wrong size / type of media used during blasting causing impact damage
  • Too close to metal work during blasting causing heat and impact damage
Glass media is less likely to cause damage to thinner sheet metal used at correct angle.

I got my Powder Coat Guy to media blast the hinges and legs and then use chemical striping of the Stern Black Crinkle finish using Methylene Chloride on the side rail armour and lock down bar to play it safe.

Don’t try and powder straight over the Stern existing finish as the powder won’t bond properly, really needs the bare metal to give better result otherwise it gets messy.

I found this is the safest way to prevent any kind of warping.
Hope this helps.
Some pics attached.
View attachment 91805View attachment 91806View attachment 91807View attachment 91808View attachment 91809View attachment 91810
Great post - how much did the full set cost? I'll be doing mine soon...
 

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW
@MartinY the chap only wanted £125 but since he did such a good job I gave him some extra cash on top.....
I’ll be getting him to do some other work for sure...
Don’t forget to get your hinge bolts done too 👍
 

MartinY

Site Supporter
Nov 18, 2017
1,346
824
113
Hampshire
Cheers fella - will look at the 2 local to me and speak to them about their treatment (based on your post). Would like a few machines done - I much prefer the coated feel, let alone the look...
 
  • Like
Reactions: Hullshark

Dr. Pinball

Registered
Dec 7, 2014
50
34
18
Swavesey
www.pinballsurgery.co.uk
I bought a NP75 powder coating gun to use with my compressor and an old 900mm range cooker so I could powder coat myself. Here's a couple of quick answers to earlier question on this thread.

The most important thing is to have the job totally clean, I know that sounds obvious but unless it's absolutely scrupliously done the coat will lift. I had to get all the bits I coated shot blasted in the end the cost of that made the whole exercise pointless, you live and learn.

Once you apply the charged coating the work needs to be heated to 180C for twenty minutes, that's what can warp things. I also could not do rails with my size oven (you can tell the this whole project was a beer driven idea). The paint powder also goes everywhere so recovering it is a swine too, small bits or work are fine, you can spray into a box, but long pieces are difficult.

Is it worth getting done? Definitely, the coating goes on at least 8 times thicker than paint and it should not chip or flake. You can even get quite a good chrome now. The cost I pay is around £70 for the door, rails, lock bar and hinges, it's easier to get a deal with more bits as they charge hardly any more for adding to the job. All the pieces will need a hanging point, like a hole for suspending them in the oven.

Last point is that some things don't fit back so well due the the paint thickness so watch out for buttons and the like.

Hope this helps.
 

Neil McRae

Site Supporter
Jun 5, 2016
11,977
8,525
113
Surrey
playpinball.uk
Alias
Neil McRae
waking this thread up a little.

How are folks coping with the lockdown bars that have metal accoutrements riveted to them, see pic below - are you removing that before, if so how without bending the thing to hell? I guess I'd need a riveter to put it back on? any recommendations?

and do the power coaters take of the black stern crap that they have on pro/premium?

I'm going to get my GOTG done.

Neil

34fa830d2bdaf99803816799ea65bf464384cb94.jpeg
 

MartinY

Site Supporter
Nov 18, 2017
1,346
824
113
Hampshire
waking this thread up a little.

How are folks coping with the lockdown bars that have metal accoutrements riveted to them, see pic below - are you removing that before, if so how without bending the thing to hell? I guess I'd need a riveter to put it back on? any recommendations?

and do the power coaters take of the black stern crap that they have on pro/premium?

I'm going to get my GOTG done.

Neil

View attachment 101305
+1, I had the same thoughts the other day.

Neil, I was looking to use that coater in Aldershot that was posted on here and did a great job. Might be sensible to get these done together? There are a few machines I'd like to do if the first is successful.
 

Neil McRae

Site Supporter
Jun 5, 2016
11,977
8,525
113
Surrey
playpinball.uk
Alias
Neil McRae
I’m going down tomorrow :) but I’ve got a few other games to do - so I could be test for rails then we could get a bunch done together.

Neil.


Sent from my iPhone using Tapatalk Pro
 

BigIan

Registered
Jul 21, 2011
3,980
2,059
113
Belfast, Northern Ireland
Alias
ZIG
The coater should be able to blank that plate off before coating the lock down bar. Means under neath won’t be coated and could be a dodgy join etc.
I would just drill the rivets out from behind and then reattach after. Make sure to get you coater to bung the holes though
 
  • Like
Reactions: Neil McRae

Dr. Pinball

Registered
Dec 7, 2014
50
34
18
Swavesey
www.pinballsurgery.co.uk
Neil, any decent powder coating company will insist on prepping the job, be it rusty or new paint that needs removing. The one I use beadblasts the job, they are clean as a whistle prior to the powder going on. I stopped doing home powder coating simply because the prep is everything.

The plate could stay on as it can be masked from the powder. It will flow up the edges effectively burying the plate slightly when it’s heated though that may look quite decent. One for your preference.

Mark
 
  • Like
Reactions: Neil McRae

Sako-TRG

Site Supporter
Aug 3, 2018
1,961
1,346
113
DG126TW
Old powder will come off as part of the service
Rivets are a doddle to take off and re- rivet.
I would certainly not leave plate on - no way.
I have 2 rivet guns at home with a box of rivets various sizes - cheap as chips