Maxshine M312 3-Inch
A compact 3 in polisher for mirrors, pillars and bumpers, as a second machine beside a full-size one.
Amazon $198.99$198.99
The Maxshine M312 3-Inch is the better dual action car polisher overall, rated 2.7 to 2.5. The Maxshine M312 3-Inch leads on value and power. The Maxshine M312 3-Inch costs $122.01 less ($198.99 vs $321).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
RUPES BigFoot LHR12E Duetto
A mid-throw RUPES polisher at a lower price than the Mark V line, for owners who want a 12 mm orbit on a full-size pad.
Amazon $321$321
Which should you buy?
- Choose the Maxshine M312 3-Inch for value ($198.99 vs $321) and power (550 W vs 400 W).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every corded short-throw dual action car polisher; a clear win is highlighted. How we rank explains each one.
| Factor weight | Maxshine M312 3-Inch | RUPES BigFoot LHR12E Duetto |
|---|---|---|
| Overall rating | 2.7/5 | 2.5/5 |
| Correction 30% | 44 12 mm orbit | 44 12 mm orbit |
| Value 25% | 62 $198.99 | 35 $321 |
| Warranty 15% | 0 1-year warranty | 0 warranty not published, scored as none |
| Power 10% | 21 550 W | 0 400 W |
| Weight 10% | 50 weight not published (neutral score used) | 57 5.7 lb |
| Features 10% | 0 none of the listed features | 0 none of the listed features |
Specifications
| Maxshine M312 3-Inch | RUPES BigFoot LHR12E Duetto | |
|---|---|---|
| Polishing | ||
| Orbit diameter | 12 mm | 12 mm |
| Speed range | 2,000-5,500 OPM | 4,000-5,500 OPM |
| Backing plate | 3 in | 5 in |
| Forced rotation | No | No |
| Power | ||
| Power source | Corded | Corded |
| Motor rating | 550 W | 400 W |
| Brushless motor | Not listed | Not listed |
| Controls | ||
| Constant-speed electronics | Not listed | Not listed |
| Soft start | Not listed | Not listed |
| Lock-on trigger | Not listed | Not listed |
| Build | ||
| Weight | - | 5.7 lb |
| Pads or polish included | No | No |
| Warranty | 1 year | - |