More from Let's Resin →S4 Pro 4-in-1 Precision Resin Sander & Polisher
$98.99$129.99Save 24%
In stock at letsresin.com
The Let's Resin S4 Pro is a compact rotary sander and polisher that works handheld or mounted on a suction-cup base as a bench sander, polisher or tabletop grinder. Two 2000mAh batteries give about 1.5 hours of cordless use, or it runs wired. It has 3 speeds and an LCD. It suits resin crafters finishing edges, bubbles and burrs.
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Highlights
- 4-in-1: bench sander, polisher, grinder, handheld sander
- Two 2000mAh batteries, about 1.5 hours
- Wired mode for long sessions
- 3 speeds with LCD display
- USB-C charging
Best for
Resin makers who want a desktop finishing tool for small pieces.
Things to consider
- Runtime varies with speed and pressure
- Sanding resin creates fine dust; wear a mask
- Included sanding and polishing accessories are not fully listed in the dossier
Key specs
| Price | $98.99 (was $129.99) |
|---|---|
| Main unit | 7.74 x 1.73 in |
| With base | 9.74 x 4.16 x 3.56 in |
| Battery | 2 x 2000mAh |
| Runtime | About 1.5 hours |
| Speeds | 3 |
Our take
A practical finishing tool that saves space for small-scale resin work.
S4 Pro 4-in-1 Precision Resin Sander & Polisher at a glance
| Brand | Let's Resin |
|---|---|
| Price | $98.99 (was $129.99) |
| Type | Adjustment Tools |
| Availability | In stock at letsresin.com |
| Returns | Returns are accepted within 30 days for unopened, unused items with a return request and… |
Price check
At $98.99, the S4 Pro 4-in-1 Precision Resin Sander & Polisher is toward the top of Let's Resin's price range, whose 228 listed products run $5.99 to $900.
It's currently 24% below its listed price of $129.99. Sale prices can end without notice, so check the live price before you order.
Similar items from other brands we track run $49.99 to $99.99.
Frequently asked questions
Can it work on other materials?
The listing says it also handles metal, glass, jade, jewelry, acrylic, ceramic and wood.
Is it cordless?
Yes, with built-in batteries, and it can also run wired through an adapter.
Is the S4 Pro 4-in-1 Precision Resin Sander & Polisher on sale?
Yes. Let's Resin lists it at $98.99, down from $129.99 (24% off). Sale prices change, so confirm the live price on letsresin.com.
What is Let's Resin's return policy?
Returns are accepted within 30 days for unopened, unused items with a return request and tracked shipping. Customers pay return shipping unless the item was misdescribed, damaged by the carrier or defective.
How long does Let's Resin take to ship?
Continental US orders over $30 ship free; smaller orders cost $5. Orders process in 1 to 3 business days and arrive in about 3 to 10 business days with tracking.
Does the S4 Pro 4-in-1 Precision Resin Sander & Polisher come with a warranty?
Let's Resin's published warranty terms: Eligible products are covered for 1 year from purchase against manufacturing defects. Consumables like molds, sanding discs and polishing pads are excluded, as is damage from misuse.
Where can I buy the S4 Pro 4-in-1 Precision Resin Sander & Polisher?
The S4 Pro 4-in-1 Precision Resin Sander & Polisher is sold directly by Let's Resin on letsresin.com. The Shop now button on this page goes straight to the product there.
Is the S4 Pro 4-in-1 Precision Resin Sander & Polisher in stock?
Yes. Let's Resin lists it as in stock on letsresin.com as of our latest check. Stock and prices refresh throughout the day.
Is Let's Resin a legit store?
Let's Resin is a solid one-stop shop for US resin crafters who want resin, molds, colorants and tools from one place at fair prices, and the $30 free-shipping line is easy to reach. Skip it if you might want to return opened materials, since returns must be unopened and unused and you pay return shipping. Check the cure time and resin type (epoxy versus UV) on each listing before you plan a project. Our full Let's Resin review covers shipping, returns and what to check before ordering.
Is the S4 Pro 4-in-1 Precision Resin Sander & Polisher expensive?
At $98.99 it is toward the top of Let's Resin's range ($5.99 to $900 across 228 products), and similar items from other brands run $49.99 to $99.99.
