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Mike Phillips
12-16-2013, 12:31 PM
Rupes 5 Inch 2000 & 3000 Grit Sanding Discs (http://www.autogeekonline.net/forum/ask-expert-featuring-mike-phillips/74346-rupes-5-inch-2000-3000-grit-sanding-discs.html)


Tested out the Rupes Sanding Discs using the Rupes Duetto and took some pictures to show them in action.

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_001.jpg

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_002.jpg


Rupes 5" Interface Pad
This goes between the backing plate and the sanding disc to provide flexible cushion which helps the face of the sanding disc to maintain uniform surface contact when sanding curved panels. It can also help reduce the aggressiveness of the sanding action.

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_003.jpg

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_004.jpg



Misting some water from a clean sources onto the panel...

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_005.jpg



The #2000 disc on the 12 millimeter orbit stroke Duetto cuts fast!

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_006.jpg



The #2000 sanded the panel down very fast...

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_007.jpg


http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_008.jpg


http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_009.jpg




D.O.I. = Distinction of Image
How well or clear an image is reflected.

Now take note of the DOI of the reflected florescent tube light on the panel.

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_010.jpg

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_011.jpg



Sanded clear paint turns white

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_012.jpg



Re-sand one half with #3000

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_013.jpg


Sanded...

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_014.jpg

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_015.jpg



Less cut = less paint build-up on the sanding disc....

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_016.jpg



Gloss and reflectivity coming back. - D.O.I. increasing
The side sanded with the #3000 Grit Rupes Sanding Disc will sand out faster and easier while keeping paint temperature lower.

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_017.jpg



#2000 Grit Side

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_018.jpg


#3000 Grit Side

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_019.jpg



Ready to re-sand the #2000 grit side and then buff-out the sanding marks.

http://www.autogeekonline.net/gallery/data/2195/Rupes_Sanding_Discs_020.jpg



The Rupes Sanding Discs are similar to the Mirka Abralon Sanding discs in form and function. I like the 5" diameter size as it makes these discs more usable for thin body panels as compared to the industry standard of 6" diameter.



On Autogeek.net


Rupes Polishers, Polishes and Pads (http://www.autogeek.net/rupes-polishers.html)



:)

Andr3wilson
12-16-2013, 12:42 PM
To be honest I was kind of surprised they came out with the duetto as a sander. 12mm throw is huge.. Most sanders are around the 2-5mm. Super aggressive tho.

Hoytman
12-16-2013, 12:51 PM
I am wondering, since the Rupes throw is much larger allowing for more aggressive cutting action through increased speed, if this won't be recommended only for more experienced users? Seems like a quicker way for those less experienced to make mistakes. I would like Mike's comments in that regard.

Tato
12-16-2013, 01:05 PM
Hi, thank you for this another exciting topic.

Which was the speed of choice for sanding with this kit? Can you describe a little how was your technique?

Can't wait to see the 3000 grit side polished to a high gloss, maybe with Rupes MF pads and polishes? Should be great.

What about polishing one side with Rupes MF and other with Rupes Foam Pads?

It would be great to hear your considerations.

Thank you again,


Kind Regards.

Mike@DedicatedPerfection
12-16-2013, 01:12 PM
Thanks for putting this together Mike.

Looks like the whole RUPES system is a well thought out systematic approach in everything paint related.

JSou
12-16-2013, 02:20 PM
Phenomenal. Want.

Mike Phillips
12-16-2013, 03:24 PM
To be honest I was kind of surprised they came out with the duetto as a sander. 12mm throw is huge.. Most sanders are around the 2-5mm. Super aggressive tho.




Meguiar's Unigrit Sanding and Finishing Discs are designed for use with tools like the Porter Cable and the Meguiar's G110v2 dual action polishers.

These have a 8mm orbit stroke or basically a 5/16" stroke.

Most finishing sanders are smaller in stroke, like 3/16".


:)

Mike Phillips
12-16-2013, 03:50 PM
I am wondering, since the Rupes throw is much larger allowing for more aggressive cutting action through increased speed, if this won't be recommended only for more experienced users?



Definitely helps to have any kind of wetsanding experience...

Here's the real issue... this #2000 grit sanding disc on the Duetto cut like son of gun! I mean it cut fast!


The only time you would catch me using the #2000 grit would be on a custom paint job, that is a car that was painted at a local body shop by a custom painter that KNOWING the car is to be wetsanded was paid extra money for the below three things and thus sprayed extra paint on the car.

Time
Labor
Materials

By doing this, the guy doing the sanding has some film-build to work with and a level or measure of safety margin.


"It's all about the film-build"


I would also ask the car owner if the painter is available to talk to and then drill-down, that is call the painter and ask him how much paint he sprayed? Also ask if he are anyone at his shop sanded and buffed the paint because this means they've already removed paint before I get my hands on it.

As for a factory finish, if someone wants to sand down factory paint the first question I ask is,

Why?

Once all the reasons are established then it's time to talk about #3000 Grit or #5000 Grit or CarPro Denim Orange Peel Removal Pads, not #2000 grit sanding products.






Seems like a quicker way for those less experienced to make mistakes. I would like Mike's comments in that regard.



Using a more aggressive sanding paper by hand or sanding disc by machine is always risking when working on a factory finish because a factory finish is,


Thin
Hard
Sanding is easy... that's putting scratches into the paint... the tricky part is getting them out without making a mistake...

:)

Mike Phillips
12-16-2013, 05:01 PM
See the sanding marks removed here...

Rupes Microfiber Cutting Disc with Rupes Zephir Gloss Coarse Gel Compound (http://www.autogeekonline.net/forum/ask-expert-featuring-mike-phillips/74359-rupes-microfiber-cutting-disc-rupes-zephir-gloss-coarse-gel-compound.html)

Here's the Rupes Zephir Gloss Coarse Gel Compound and the new 6" Blue Microfiber Cutting Disc on the new Rupes Duetto 12 mm orbital polisher.

http://www.autogeekonline.net/gallery/data/2164/Rupes_Zephir_Gloss_Coarse_Gel_Compound_001.jpg




:buffing:

Andr3wilson
12-16-2013, 07:16 PM
Meguiar's Unigrit Sanding and Finishing Discs are designed for use with tools like the Porter Cable and the Meguiar's G110v2 dual action polishers.

These have a 8mm orbit stroke or basically a 5/16" stroke.

Most finishing sanders are smaller in stroke, like 3/16".


:)

Correct!

I feel for levelling something it would speed the job up nice.

Person I block by hand more than machine, I just like the feel. Typically not doing large areas either (spots, nibs, etc)

Although the one element I need to ask, how does it feel compared to a palm style sander? More down to user preference I guess, but how did you find it to the comparable RUPES palm sander?

Mike Phillips
12-17-2013, 09:56 AM
Although the one element I need to ask, how does it feel compared to a palm style sander? More down to user preference I guess,

but how did you find it to the comparable RUPES palm sander?




In our garage we have the 3M Orbital Air Sander, the Rupes Orbital Air Sander and my personal orbital air sander I brought with my from California my Dynabrade.

Here's the skinny...

All thread work great and the ergonomics of holding, using and sanding with a palm sander is much better and easier as well as safer than machine sanding with an electric polisher mostly used for paint polishing.

The big picture however is most people don't' own an air compressor with a large enough reserve tank capacity, let alone the air compressing power to maintain the tank capacity to use an air powered air sander.

Here's ours...

Ingersoll Rand Rotary Screw Compressor
http://www.autogeekonline.net/gallery/data/824/NewTrainingRoomStudio003.jpg

But yeah... I like to sand with them. I don't like the stiff air line that goes with using an air powered DA sander.

Also, if any reps for any companies that sell air powered DA sanders are ever reading this into the future, please make it so the throttle is not a slide switch but use some type of ratchet steps in-between speed settings as these things are just way to easy to bump and adjust when your sanding.


You can see the Throttle next to my thumb on the underside of this 3M Air-Powered DA Sander
http://www.autogeekonline.net/gallery/data/834/DampSanding02.jpg



Out of the three above air sanders I found the 3M and the Rupes to work faster than my Dynabrade but my Dynabrade is a "finishing" sander, it has a smaller orbit stroke length.

:)


3M Random Orbital 6 Inch Air Sander 20325 (http://http/#37;3A//www.autogeek.net/3m-orbital-air-sander.html)
http://www.autogeekonline.net/gallery/data/834/DampSanding01.jpg





http://www.autogeekonline.net/gallery/data/1737/Rupes_RH156_Orbital_Sander_001.jpg


Machine sanding a 1970 Oldsmobile Cutlass with the Rupes Air Sander

http://www.autogeekonline.net/gallery/data/1737/How_To_Remove_Orange_Peel_008.jpg



This is me using my Dynabrade when I wetsanded the Joker Truck

http://www.showcargarage.com/gallery/files/1/SoloOnJoker006.jpg












:)

ARTB155
11-29-2016, 12:21 PM
Can X Cut foam pads (150 mm) can be used with lower stroke DA Machine than 12 Duetto as I do not have that one.
From Rupes I have LHR 15 Mark II so I was planing to use X Cut Foam pads with Meguiars MT310 which is 8 mm stroke.
Also what machine speed is reccomended for these pads.

Thx

Mike Phillips
11-30-2016, 08:06 AM
Can X Cut foam pads (150 mm) can be used with lower stroke DA Machine than 12 Duetto as I do not have that one.



First, do you mean the

RUPES X-Cut Foam Sanding Discs



I just need to clarify because you wrote

X Cut foam pads


Without the word RUPES in the front and using the word pads instead of discs, I don't like to assume what you mean.



But if you do in fact mean,

RUPES X-Cut Foam Sanding Discs


Then the answer is YES you can use these foam backed machine sanding discs from RUPES with 8mm Orbital Polishers like the Griot's Garage 6" DA, the Meguiar's MT300 DA and the Porter Cable 7424XP DA.






From Rupes I have LHR 15 Mark II so I was planing to use X Cut Foam pads with Meguiars MT310 which is 8 mm stroke.



Yes you can use the Meguiar's MT300 to machine sand. Because of the long body it will be a little more awkward and cumbersome to sand with but it will work.






Also what machine speed is recommended for these pads.

Thx


You need to maintain pad rotation.


So mark your backing plate so your eyes can see pad rotation and then adjust the speed dial as needed to maintain pad rotation.


:)

Mike Phillips
11-30-2016, 08:10 AM
Just add....


I wrote the below article when shortly after Meguiar's introduced their Unigrit discs back in the fall of 2009. My article came out in May of 2010. It's actually the only article I've ever seen on the topic of damp sanding and it is more than in-depth... it's exhaustive.


All the tips and techniques I shared in this how-to article are just as accurate today as when it was written. All the tips and techniques shared in this article appley to ANY brand of sanding disc that is made to be used with water.



Damp-Sanding Tools, Tips and Techniques by Mike Phillips (http://www.autogeekonline.net/forum/wet-sanding-cutting-buffing/25915-damp-sanding-tools-tips-techniques-mike-phillips.html)



:)

Mike Phillips
11-30-2016, 08:11 AM
Just out of curiosity....


What are you working on?


:)