Rupes BigFoot 5" Duetto Electric Random Orbital Polisher

Rupes BigFoot 5" Duetto Electric Random Orbital Polisher

Rupes BigFoot 5" Duetto Electric Random Orbital Polisher

Rupes BigFoot 5" Duetto Electric Random Orbital Polisher
The Rupes LHR12E BigFoot 5" Duetto features a conveniently located Speed Controller.  Speed range is 4,000-5,500 RPM.  As is the case with all random orbital polishers, the rate of free-spinning backing plate rotation varies.The Rupes LHR12E BigFoot 5" Duetto is comfortable to use.  It features a hand pad over the head of the machine, allowing complete and easy control.  While a side handle could be used, there is no option for one through Rupes.  Really though, a side handle is not a necessity. The machine also features a built-in non-marring white rubber standoff, allowing the machine to be securely stabilized when not in use.The Rupes LHR12E BigFoot 5" Duetto is COMPACT and superbly BALANCED.  Its orbital action (12mm orbit diameter) is LARGE, especially when compared to other typical 5" electric machines.The Rupes LHR12E BigFoot 5" Duetto can also be outfitted with Rupes uniquely-designed Microfiber Pads!  The speed of cut is typically greatly enhanced versus a foam pad when using these pads. Shown is the Rupes 9.BF150XM Yellow Microfiber Polishing Pad.The Rupes LHR12E BigFoot 5" Duetto , shown with a bevy of wonderful Rupes Foam Buffing Pads, and 5" X-CUT Foam Abrasive Discs.The Rupes LHR12E BigFoot 5" Duetto is also a fantastic sander!  Any 5" diameter sanding disc works well with this machine.  Shown outfitted with a Rupes 980.041 5" Interface Pad, and a  9.45403 5" P3000 grade X-CUT Foam Abrasive Disc.The Rupes LHR12E BigFoot 5" Duetto is very likely the best 5" electric sander/polisher currently available. This is in large part due to its 12mm diameter random-orbit action. Shown outfitted with a Rupes 980.041 5" Interface Pad, and a  9.45400 5" P1500 X-CUT Foam Abrasive Disc. Also shown: 9.45401 (P2000) and 9.45403 (P3000) 5"  X-CUT Foam Abrasive Discs.The Rupes LHR12E BigFoot 5" Duetto is very likely the best 5" electric sander/polisher currently available. This is in large part due to its 12mm diameter random-orbit action. Shown outfitted with a Rupes 980.041 5" Interface Pad, and a  9.45403 5" P3000 X-CUT Foam Abrasive Discs.The Rupes LHR12E BigFoot 5" Duetto works best when factory Rupes Foam Pads are used, as their design delivers a balanced and agile feel. Shown: 9.BF150H (blue extra-cut foam pad), 9.BF150J (green intermediate-cut foam pad), 9.BF150M (yellow fine foam polishing pad), and 9.BF150S (white ultra-fine foam finishing pad).The Rupes LHR12E BigFoot 5" Duetto can be outfitted with Rupes uniquely-designed Microfiber Cutting and Finishing Pads.  Smooth operators!Replace the factory plastic bolts with polished button head stainless steel bolts! Nicer looking, plus they allow you to super-tighten the head cap assembly (which always seems to loosen up when using the plastic screws).
Click to enlarge image(s)
Duetto. Serving double-duty as a sander and polisher.

The Rupes® LHR12E BigFoot 5" Duetto Electric Random Orbital Polisher features a 12mm orbit diameter, which is 50% more orbital motion than competitor's typical machines.  This places the Duetto solidly into the large stroke category, yet it is still reasonable to use for tight-area sanding & polishing.

Why is a large diameter stroke or orbit beneficial?
To better understand why a large stroke machine can deliver better and faster polishing results, imagine hand sanding a panel of wood with a typical sanding block & paper using very short 1mm back and forth strokes. Although sanding would be concentrated and exact, most of the sanding debris would remain positioned between the sandpaper and wood panel. Rapid clogging of the sandpaper would likely occur, effectively limiting cutting power and finishing potential.  

However, if the length of each sanding stroke was increased (within a similar time frame), the sandpaper would move along at a more rapid pace.  The increased speed of motion would assist in loosening any stuck-on debris from the sandpaper, all the while helping to eliminate sanding debris residing between the paper and wood surface. The exact same principles of extending the stroke apply when using the LHR12E, except the motion is rotational, not linear.  

High speed + lots of motion = very fast polishing.
A majority of the buffing liquids available today utilize abrasive particles that are engineered to assist in polishing the surfaces we're working on.  To work efficiently, these particles must occasionally shift and tumble in order to keep them free of debris, minimize clumping of the abrasives, and slow contamination of the buffing pad.  The LHR12E's large-diameter stroke diameter (12mm) and high speed capability (5,500 RPM) combine to deliver unrivaled performance in this regard, utterly stomping the performance mustered by other 5" machines.

Use the Duetto for the sanding of fine automotive paint!
This versatile tool can also be used for fine-grade automotive sanding, but the user should have at least some experience with machine sanding, because sanding can take place rapidly.  In addition, edge-digging and consequental deep scouring of the surface may occur if the machine is not kept level to the surface being sanded.  It is not necessary nor desirable to use high speeds when sanding;  the ideal speed is one that allows the disc to travel along the surface in a smooth, flowing manner, with at least some rotation of the backing plate.  Use of a foam interface pad is highly recommended.

Pair the Duetto with Rupes XCUT® Sanding Discs, or other brands of sanding pads.
Although the LHR12E's 12mm orbit diameter positions it at the low-end of the large stroke polisher category, it's definitely on the upper end when it comes to using it as a sander. Regardless, sanding is very comfortable and controlled.

The LHR12E BigFoot Duetto leaves surfaces beautifully polished & remarkably scour-free.
The first time I used a large stroke random orbital polisher, curious and a bit confused might best describe what I felt upon inspecting the paint surface after a brief polishing test.  Rather than seeing scour marks or haziness (as is often the case when using small diameter pads for compounding), I instead saw a beautifully polished & scour-free result. Although the Duetto does not tout the massive throw of its LHR21ES counterpart, it still delivers 50% more throw than a typical 8mm orbit diameter machine.

The LHR12E  BigFoot Duetto is easy to control, and fun to use!
The moment you use the Duetto, it is immediately apparent how managable it is to operate.  The Duetto is specifically balanced for use with Rupes-brand 5"(130/150mm) Foam or Microfiber Pads, but can also be used with other similarly-sized pads.

To recap, this machine features:

           • A 12mm orbit diameter
           • Fast cutting speed
           • Fantastic finishing potential
           • Extended working time per application of buffing liquid
           • Less build-up of contaminants across the face of discs & pads
           • A stroke diameter enabling it to also be used as an automotive paint sander
           • Smooth & balanced swooping motions for increased user comfort

 OPTION 1:  Add a Rupes 4-Piece Foam Buffing Pad Set, save 15%. 
You'll be ready to tackle just about any polishing task if you've got a set of 5" Rupes® Foam Buffing Pads on hand.
They've been optimized specifically for use with Rupes BigFoot machines (read about them here).  
There are 5 grades of foam pads to choose from:

  Blue   = Coarse Cut  |    Green   = Int. Cut  |    Yellow   = Polish  |    White   = Finish  |    Gray   = UHS 1-Step

 OPTION 2:  Add Rupes Microfiber Buffing Pads, save 19%! 
Rupes 5" Blue Coarse Microfiber Cutting Pads can remove paint defects rapidly. Flared-edge design enables them to contour to complex surfaces with ease. Rupes 5" Yellow Microfiber Finishing Pads delicately polish all types of paint finishes (read about them here).

  Blue   = Coarse Cut  |    Yellow   = Finishing  

 OPTION 3:  Add X-CUT Foam Abrasive Sanding Discs & Interface Pads, save 15%. 
If there's even a small chance that you'll be using the LHR12E for sanding chores, you'll want to have some X-CUT Foam Abrasive Sanding Discs on hand. These discs are available in P1500, P2000, and P3000 grades. We've packaged four of each grade, enough for you to run X-CUT Discs through their paces.

For optimal sanding results, be sure to utilize an interface pad.  By placing an interface pad between the sanding disc and backing plate, the disc will more easily conform to curved or complex surfaces.  Should you inadvertently tilt to the machine during use, an interface pad will help to distribute pressure across the face of the disc.  

980.041 (soft) | 1055F (firm)

 OPTION 4:  Add a spare backing plate, save 15%. 
Better to be safe than sorry!  Having a spare backing plate on hand is always smart.  The Rupes 980.027 5" Backing Plate is a direct replacement for the factory installed unit. The Rupes 980.015 should be used if you would like a bit less holding power (these are factory installed on the 5" Rupes Skorpio® Palm Sanders).

This machine carries a one-year parts and labor warranty.

Check out the LHR12E's next of kin: Rupes LHR15ES 5" Electric Random Orbital Polisher
Specifications & Notes:
Motor specifications:
400W / 110V

Speed settings:
Variable @ 4,000 R.P.M - 5,500 R.P.M.

Stroke size:
6mm offset, creates a 12mm orbit diameter

Machine type:
Random Orbital Polisher aka Dual Action

Action 1:
Shaft drive rotates a free-spinning backing plate spindle, creating a circular path measuring 12mm in diameter

Action 2:
Backing plate free-spins and can rotate in either direction.

Backing plate: #980.027
4-7/8" (73mm) 8mm x 1.25mm bolt-mount

Spindle mounting hole:
8mm x 1.25mm thread

4 lb. 13 oz. not including cord
5 lb. 8 oz. including cord
Size: 11-3/4" long x 4-7/8" wide x 5" tall