Backing plate burning up (?)

[Js90Lx]

I started working on a clients car this morning. I finished half of the deck lid and noticed black specks all over the paint. This can't be normal right? I have to clean the backing plate off every few section passes but it keeps coming right back. I'm afraid I am going to mess up someone's paint. I've watched several videos of people using their 21es, they do not seem to have this problem.

[Js90Lx]

Couple more pics.

[Just02896]

Are you trying to do heavy correction with polishing setup? Maybe to much pressure and to long of a working time? If so, step up to a more aggressive pad and polish in order to cut faster while generating less heat.

Or maybe it's a defective backing plate. I've had them fail on me before.

[Js90Lx]

No pressure, no heat build up. I was using a cleaner wax. This happens with or with out pressure, hot or cold. Yeah, I really think the backing plate is defective.

[BillE]

What machine are you using?

Is the backing plate hitting the housing anywhere?

Is the compression washer on the backing plate?

Bill

[Mike Phillips]

I started working on a clients car this morning. I finished half of the deck lid and noticed black specks all over the paint.

This can't be normal right?

I have to clean the backing plate off every few section passes but it keeps coming right back.

I'm afraid I am going to mess up someone's paint. I've watched several videos of people using their 21es, they do not seem to have this problem.

We use all the Rupes polishers all the time here for project cars and I've never seen anything like this before.

I've seen the backing plates made first hand,

Top Secret Pictures – How Rupes Bigfoot Polishers are made!


I was not given permission from Rupes to take pictures of the process but after witnessing how they are made standing about 7 feet from the machine it's a very hi tech process.

An easy way to troubleshoot and test this issue would be to get a new backing plate and see if the problem goes away.


If it does then that's a pretty good indicator the problem was faulty backing plate.

If the problem doesn't go away then we need to look elsewhere for the issue.

[Js90Lx]

21es

[Mike Phillips]

This can't be normal right?

Just to check, are you the gentleman I spoke with on the phone last week about a backing plate issue?

If so, give me a call at 1-800-869-3011 x206

[parttimer]

Did you do the washer mod?

[Mike Phillips]

Good talking to you on the phone today Jeremy.

We'll have the new backing plate in the mail today. Give the new backing plate a test and let us know how it goes.

I will also send the link to this thread to my engineer friends at Rupes as a professional courtesy to monitor the feedback.


Thank you for your business!