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View Full Version : Need recommendation of a PRO polisher.



CTNewman
03-09-2016, 10:47 AM
Here's the story, I had this one-off neck casting made. It was not cheap.

When I designed the part it was going to be mild steel and painted. Well plans changed and now it's 316SS and needs to be polished.

I got it close on my own equipment, but I wasn't satisfied, so i took it to a local polisher. He worked it for a few weeks and basically said he couldn't get it any better. Then I sent it to someone who guaranteed that he could do it, but failed to meet my expectations.

Here it is before polishing:

http://i.imgur.com/jkwQtke.jpg?1

I don't have any pictures of how it looked after my polishing job, but here it is after the first shop:

http://i.imgur.com/ejkYbYf.jpg?1

After the second shop. It looks good in the photo they sent me:

http://i.imgur.com/UlnzZYK.jpg?2

But in real life I can see flaws from 5 feet away, which is no-go for this project.

http://i.imgur.com/frBSckr.jpg?1


So at this point I have about 2500 in the part. 1700 for the casting and 800 between the two polishing shops (which I am trying to get some of my money back from)

So either (hopefully) I can find someone who is the GOD of polishing, but if that doesn't work I am going to start over with a new piece that is easier to polish, but that's going to be an expensive lesson learned.

So do you have anyone that is THE MAN for polishing hard metal? For scale in those pics the part is about 7x7x3 and the inside corners are only .020 radius. That's how I fucked myself. Bad design for the final application.

boomboomthump
03-09-2016, 11:59 AM
Hey man... I've dealt with a lot of polishers over the years and even my local guy which I consider top notch would probably bitch and moan about that job and tell me he wouldn't be able to get it perfect. Those small nooks and crannies are quite the chore to take through the varying grits, especially against those flat surfaces. Add on top of that the fact that it is stainless and this is even harder.


Probably hindsight now (maybe not) but electropolishing may have been the answer here. Might be something worth looking into though it is typically done on parts that have a uniformly rough texture. Not sure about about parts that are already polished.


I personally think that you won't find anyone to hand polish that and give you satisfactory results. If they can actually get into those bevels and smooth them out, the flat areas of those recesses are likely going to start to get wavy and leave you unhappy as well.

CTNewman
03-09-2016, 12:04 PM
Thanks for the reply. I'm worried this is the answer I am going to hear over and over. I'm totally aware of how hard it is because there are 12 other cast parts from this lot that I've done all the polishing on, it's just this one in particular that I can't get right, and, of course, it's the largest and most prominent.

cggorman
03-09-2016, 2:42 PM
I had a guy that could do that, but he is retired. Did Harley, marine, and aircraft parts for 40 years. He and his wife. They would have charged a ton for that due to the amount being die grinder and hand work. I'd suggest telling your guys that you u derstand the time and difficulty but that you do require all the inside radii sanded and polished. Fortunately, the casting doesn't look at all porous so that helps tremendously.

I wish my guy was still doing side work. I miss him. Threw many thousands of dollars his way over the years.

butchdsd
03-10-2016, 2:14 PM
Hello xnewmanx..give "the finishing touch" in Chicago a call...Absolutely none better..maybe..maybe.. some as good..I started using them 20+ years ago..same owner.. same employees..
If you can get Mark on the phone..tell him butch recommended you..
Best of luck!!
B.

SamHain
03-10-2016, 9:16 PM
I've heard good things about American bright works in garden grove ca

https://m.facebook.com/AmericanBrightworksInc/