Wet sanding powdercoated alloys

Mr Whippy

Veteran
 Harrogate
I got one of my Ellipsoids powder coated in the proper Deutsch Silver that these wheels came with as OEM.

The finish was 'ok'

The expected orange peel surface lacquer was clearly evident all over the alloy, a feature mostly caused by a lumpy base coat which is what goes on first by electrostatic charge attraction (or something)... this base coat could be flattened before the metallic coat goes on, and then the lacquer would likely go on much smoother too, but that would add extra cost.

Anyway, there were a few other defects, like pin marks in the base coat, which you couldn't feel in the lacquer. These are noticeable from a metre away in flat but bright conditions outside. There were around 10 of these on the wheel, which was a bit disappointing.
There were also some points where the base coat is clearly a bit thinner and so has a very orange peel texture to it where it's not smoothed out as the build gets deeper. These I can't do much about, but the lacquer can be smoothed.


Anyway, I started with 2000 wet and dry, at first the texture really jumps out, as the top of the peaks go matte, and the deepest points stay shiny... this takes a long time to work down, attacking, then drying, until the deepest spots are starting to go matte too. At that stage I worked with 2500, then 3000 at the end for a while longer, really getting lots of water on there.
I then used Megs Ultimate Compound by hand, several passes really boost the finish. So far I have used two, and it got twice as glossy. I feel with more passes (really need a dremel or something for these small areas with a tiny mop on the end) the gloss will really jump out!

Here is a picture of the general colour/finish of the wheel, and then a few before/afters.

107_01.jpg
107_02.jpg
107_03.jpg
107_04.jpg
107_05.jpg


I will take more pictures when I re-work more of the alloy (ie, when wet sanding)... this was more an experiment to see how deep the lacquer was. It's clearly thick enough to be smoothed almost totally, but I'm not sure how much is left. It may well be that 25% of the coat has the lumps and the rest is nice, or it may well be that I've taken 75% away to get a smooth surface. It would be interesting to keep working on the back of a spoke and see how long it takes to work through.

All fun, very hard work. Now I'm not sure whether to get my other wheels done or not. The defects kinda bug me, but £60 per wheel is pretty cheap (would be £90 to get them done with wet paints/flatted properly, so might just stump up the extra £120 and do that and be 100% happy with them)

So, powder can be cut back smooth, but can you be arsed? If the process actually included a flatting stage after the base then they would be lots better (the coater said they could do that, but it'd push the price to £90 anyway, and I'd rather just got wet painted at that price!)

Dave
 
slightly off topic but after reading that thred on piston heads re wet sanding i see the dreaded orange peel effect on a lot of bmw's, including my zed, but i can live with it.

i think for the effort id agree and just go for wet painted. how much time have you spent doing it yourself so far?
 
Too long. I rekon you would spend a good 2hrs per wheel doing a quick and rough job, maybe 4hrs to do a really good job per wheel.

I think I might just go full wet painted, then they are right, may even splash out on some F1 Asymmetrics too, get them all fitted up and balanced afterwards...

Wish I had just bought new ones now back when I first got the car. M-style gave me a good quote, all with tyres fitted, delivered and everything. Hey ho, I live and learn, the hard way :P

Powdercoat clear is also very hard... the first bumps come out nicely, but unless you then get it dead flat it looks like cheese with the odd small depression, so you need to work right through all the orange peel marks... I guess that is when you risk going too deep with rougher papers, so using a finer one for longer and drying/reviewing often is key, but it IS a long process :rofl:


My point ultimately still stands. £250 for powder, or £360 for wet. The extra £110 really IS worth spending to get concours quality wheels, rather than 'average' ones, imho...

Dave
 
Very interesting, thanks for posting that up!

I'm still dithering about what to do with mine. I've not had a quote for wet painting, but I can get a full set of 108's powdercoated for £150 which is a bit of a bargain. Might be OK for the money but I think I'm too fussy now that I've owned polished rims. Beforehand I'd have been happy powdercoating but now I'm not sure...
 
if you can get 108's powdercoated for £150 does that include taking them apart and stripping down to bare metal?

mine are badly corroded and thewheelspecialist.com quoted me £400 when i popped along the other week. is this just a rip off?
 
Rudd_2002 said:
if you can get 108's powdercoated for £150 does that include taking them apart and stripping down to bare metal?

mine are badly corroded and thewheelspecialist.com quoted me £400 when i popped along the other week. is this just a rip off?

The wheel specialist is spectacularly expensive. If you get a quote on line, reject it for price and lo and behold you get a lower one. That pissed me off so they didn't get the business. Send me the proper quote to begin with. It is also a franchise so I'd be careful.

Quote 1
Alloy,18",TWS Sport 3,Strip, Refit and Balance - Loose Wheels,Full refurbishment

Item Details Quantity Net Vat Gross
Alloy,18",TWS Sport 3,Full refurbishment 4 280.00 42.00 322.00
Strip, Refit and Balance - Loose Wheels 4 40.00 6.00 46.00


Net Value 320.00
VAT Value 48.00
Gross Value 368.00

Quote 2
Alloy,18",TWS Sport 3,Strip, Refit and Balance - Loose Wheels,Full refurbishment

Item Details Quantity Base Net Discount Net Vat Gross
Alloy,18",TWS Sport 3,Full refurbishment 4 280.00 15% 238.00 35.70 273.70
Strip, Refit and Balance - Loose Wheels 4 40.00 0% 40.00 6.00 46.00


Net Value 278.00
VAT Value 41.70
Gross Value 319.70





Another problem is the original paint is quite low sparkle/metallic. The sprays some people use are close but are a touch too bright. Shop carefully. I've visited and been talking to http://www.wheelrepair.co.uk/ and they've impressed me the most so far. They offered to send one of the wheels to their (powder coat) paint supplier to get perfect matches for wheel back, front and lacquer. Mine will be going there in a month or two.

Price List
Full Wheel Refurbishment (Price per set of 4)
Wheels Only
Size
Painted / Machine Finished (Diamond Cut) / Split Rims (2 Piece)
up to 15 inch £200 £300 £350
16 & 17 inch £225 £325 £375
18 & 19 inch £250 £350 £400
20 inch £275 £375 £425
Over 20 inch POA POA POA


Wheels with Tyres
Size
Painted / Machine Finished (Diamond Cut) / Split Rims (2 Piece)
up to 15 inch £230 £330 £380
16 & 17 inch £255 £355 £405
18 & 19 inch £280 £380 £430
20 inch £305 £405 £455
Over 20 inch POA POA POA


Workshop Service
Size
Painted / Machine Finished (Diamond Cut) / Split Rims (2 Piece)
up to 15 inch £270 £370 £420
16 & 17 inch £295 £395 £445
18 & 19 inch £320 £420 £470
20 inch £345 £445 £495
Over 20 inch POA POA POA



Scrapes & Scratches
Smart Repair £50
Wheel Face upto 16 inch £60
Wheel Face 17 & 18 inch £65
Wheel Face 19 inch plus POA
Painted Lip £50
Centre caps £10 per set



Extras
Flush Fitting Valves £25 per set
Tyres P.O.A.
Tyre removal, fitting and balancing £15 per wheel


Other Services

Wheel Straightening No Tyre £45
Wheel Straightening With Tyre £55
Wheel Welding £40
Blast Cleaning P.O.A.


Powder Coating
Rocker cover £40
Motorbike Wheel £40
Motorbike Frame £120
Motorbike Swing arm £17.50
Bicycle Frames £50
Bicycle Forks £10
All other items P.O.A.
 
Rudd_2002 said:
if you can get 108's powdercoated for £150 does that include taking them apart and stripping down to bare metal?

Removes tyres
Strips back to bare metal (not sure on process)
Powdercoats
Refits tyres

But I'd have to split them myself - he won't separate them himself after a horrific experience with a previous customer's cheap split rims! But I've got the tools anyway.

But, my centres are perfectly fine, so I'm debating splitting them and polishing up, then relaquering the rims myself. Just haven't got the time/enthusiasm at the moment :oops:
 
yeah i thought £400 was very OTT, i will have a look some other places. the quote for 400 was just in conversation as they are only about 3 streets away from me but i will get a quote online and see what they say.

i tried the 20% discount code on this forum and they didnt reply!
 
The Wheel Specialist did my Ellipsoid 107 in Deutche Silver (some franchises can), which is the OEM for those wheels, and they looked close enough for sparkle etc (not perfect as they were powdercoated), but the specks in the paint base, and the rippley top-coat were what put me off in the end.

£62 each I think, bare alloys in, bare out, with VAT, their best price.

BUT, I'd prefer to pay £90 for full wet paint per wheel, and have them look like new OEM. No point paying £240 for something you are not happy with, when £360 will get you something you are blown away by... which is what you want when your car is a keeper and your P&J, not just something to tart up to sell on.

Dave
 
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