Top 3018s
Add-on kit · GS-775M 20,000 rpm · 42 mm dust shoe

Genmitsu Upgraded Cuts Accessories Kit

Three parts for the three weak spots of a stock 3018: a 24V GS-775M spindle that turns twice as fast as the usual 775, a transparent dust shoe for it, and two aluminium T-track hold-downs.

  • SpindleGenmitsu GS-775M, 20,000 rpm, DC 24V
  • Dust shoeClear ABS, 42 mm motor, 38 mm hose port
  • Clamps2 × T-Track Mini hold-downs
  • FitsMost 3018 series routers
  • Brush40 mm nylon, magnetic split base
Suits
  • A stock 3018-PRO or PROVer still on its original 10,000 rpm 775
  • Engraving and fine V-carving where higher rpm gives a cleaner line
  • Owners tired of chips on the desk and stock that creeps
Skip if
  • Machines already running a 52 mm 300–500W spindle
  • Buyers who only need one of the three parts
  • A power brick too weak to start a 20,000 rpm motor
Get it here

20,000 rpm, a clear shoe and two clamps in one Genmitsu box

Most 3018 kits leave the factory with a 775 motor that turns about 10,000 rpm at 24V, no dust collection and a set of flat plate clamps. The Upgraded Cuts kit answers all three at once. Each part fixes a different habit of the stock machine, which is why Genmitsu bundles them.

  • GS-775M spindle. The same 775 can size as the stock motor, so it drops into the original holder, but rated at 20,000 rpm on 24V. A noise-suppression board is already fitted and the double ball bearings run in either direction.
  • Dust shoe. Transparent ABS with a 40 mm planted nylon brush and a magnetic split base. It bolts to the spindle with two M4 screws and takes a shop-vac hose.
  • Two T-Track Mini clamps. 6061 aluminium hold-downs that slide in the bed's T-slots and grip stock up to 45 mm thick with a hand knob.

The logic is simple once a few jobs have gone wrong. A slow spindle forces a slow feed to keep chips small. A cloud of MDF dust hides the bit and packs the slot. A plate clamp that loosens lets the blank shift half a millimetre, and the second pass no longer lines up with the first.

Size check. Every part here assumes a 42 mm-class 775 spindle. Machines already running a 52 mm 300W or 500W spindle, such as the LUNYEE Pro Max, need a different shoe and gain nothing from this motor.

For a stock 3018-PRO, 3018-PROVer or similar clone, the kit turns a first-week machine into one that cuts cleaner, faster and with the stock held still.

Measurements

The spec log

SpecValue
Kit contents1 GS-775M spindle motor, 1 CNC dust shoe, 2 T-Track Mini hold-down clamps
Spindle modelGenmitsu GS-775M (MR775)
Spindle speed20,000 rpm
Spindle supplyDC 24V
Spindle body775 can, 1.69 in (42 mm class) diameter
Spindle shaft5 mm
Spindle buildDouble ball bearings, CW/CCW rotation, noise-suppression PCB fitted
Dust shoe materialTransparent ABS
Dust shoe fit42 mm spindle with two 4 mm screw holes
Vacuum port38 mm (1.5 in) outer, 32 mm (1.26 in) inner diameter
Brush40 mm nylon, planted, on a magnetic bottom cover
Dust shoe hardware2 × M4 × 8 screws, wrench, manual
Clamp material6061 aluminium alloy
Clamp size65.3 × 20 × 50 mm (L × W × H)
Clamp capacityStock up to 1.77 in (45 mm) thick
Machine fitMost 3018 series routers; dust shoe named for 3018-PRO, PROVer, PROVer Mach3, MX3, 1810-PRO and 4040-PRO

Feeds in MDF and acrylic when the spindle doubles to 20,000 rpm

Spindle speed matters because of chip load: the thickness of material each cutting edge removes per turn. Feed rate equals rpm times flutes times chip load. Double the rpm and the same feed makes half-thickness chips, or the same chip thickness allows twice the feed.

On a 3018 the frame, not the motor, usually sets the ceiling. So the extra speed shows up mostly as a finer finish at the feeds the gantry already handles, plus a little more feed on light work. Worked examples for a 1/8-inch bit, as starting points to adjust after a scrap test:

Material, bitChip load (mm)Feed at 10,000 rpmFeed at 20,000 rpm
MDF, 2-flute flat0.02–0.03400–600 mm/min800–1,200 mm/min (frame-limited)
Cast acrylic, 1-flute0.03–0.05300–500 mm/min600–1,000 mm/min
Plywood V-carve, 20° V-bitlight300–500 mm/minsame feed, cleaner edges

Three habits keep the faster motor happy:

  • Keep depth of cut shallow. 0.5 to 1 mm per pass in hardwood, less in acrylic, whatever the rpm.
  • Watch acrylic for melting. If chips weld back into the slot, raise feed or drop rpm; heat, not speed, is the enemy.
  • Match GRBL's spindle maximum. Setting 30 should agree with the S value the CAM program writes, or the spindle runs at the wrong fraction of 20,000.

Engraving is where the gain is plainest. Fine V-bits with a 0.1 mm tip cut cleaner lines at higher rpm, which is the use Genmitsu names for this motor. The materials behind these numbers are covered in what a 3018 cuts.

In the lineup

Where it lands among 3018 gear

3018 CNC machine models by type, September 2026. Highlighted: Genmitsu Upgraded Cuts Accessories Kit.

Swapping the 775 and seating the dust shoe on a 3018-PRO

The spindle swap is a quick job on most 3018 frames because the GS-775M keeps the 775 body. Loosen the holder, slide the old motor out, move the wiring across and clamp the new one at the same height. The dust shoe then goes on top of it in three magnetic pieces.

  1. Power down and unplug the machine.
  2. Unplug the spindle lead at the motor and note which wire is positive.
  3. Loosen the spindle clamp and slide the old 775 out.
  4. Move the ER11 collet extension to the new 5 mm shaft, or fit the one supplied if it comes in the box.
  5. Slide the GS-775M in, keep the collet clear of the bed at full Z-down, and tighten.
  6. Fix the shoe's top cover to the motor with the two M4 × 8 screws.
  7. Clip the central chamber and brush base on by their magnets, then push in the vacuum hose.
The power brick matters. A 20,000 rpm spindle draws a high current at start-up. Genmitsu sells a 24V supply with an 8–10 A starting current for this motor and warns owners to check for the older brick. If the spindle stutters or the board resets on M3, the supply is the first suspect.

Two fitting details save frustration later:

  • Set the bit so its tip and the bristle ends line up. Trim the brush if it presses on the stock before the cut starts.
  • Change bits by pulling off only the bottom cover; the top stays screwed on.

The clamps need no tools. Slide them into the T-slots, set the pad on the stock edge and turn the knob until the blank no longer moves by hand.

Swap-ins

Three other ways to go

Power for the faster motor3 Genmitsu 24V Power Supply
Genmitsu 24V Power Supply
A 24V 4A Genmitsu supply with 8–10 A starting current, made to start a 20,000 rpm spindle.
  • Replacement power brick
  • 24V
  • Fits 3018-PROVer, 3018-PRO
Get it here

Kit or single parts for a stock 3018 frame

The bundle fits best on a stock machine that has none of the three. Owners who already fitted clamps, or who plan a bigger spindle, may do better buying one part alone. The decision turns on the spindle diameter and the power supply.

Your machineBest buy
Stock 3018-PRO, PROVer or clone, 775 spindle, no shoeThis kit
Clamps already fitted, spindle still stockGS-775M on its own
Faster spindle already, dust everywhere42 mm dust shoe
52 mm 300–500W spindleA 52 mm shoe; skip the 775

Check before ordering:

  • The spindle holder takes a 775 can, about 42 mm across, with two 4 mm screw holes free for the shoe.
  • The power brick can start a 20,000 rpm motor; if unsure, budget for the Genmitsu 24V supply.
  • The bed has T-slots for the T-Track clamps. Most 3018 aluminium beds do; a spoilboard on top needs slots or cut-outs where the clamps sit.
  • A shop-vac hose fits the 38 mm port or an adapter is at hand.

A 775 at 20,000 rpm remains a light motor. It will not turn a 3018 into an aluminium mill; that step needs a stiffer Z and a 52 mm spindle, set out in 3018 upgrades. For wood, acrylic and engraving, though, this box covers most of what the stock machine lacks.

The order of fitting matters less than the order of use. Clamp first, because a moving blank ruins any spindle's work; then add the shoe so the bit stays visible; then raise rpm and trim feeds from the MDF figures upward, one test square at a time.

Bench notes

Setup questions

Does the GS-775M fit the stock 3018 spindle holder?

On most 3018 frames, yes. It uses the same 775 motor body as the original spindle, about 42 mm across.

Do I need a new power supply?

Possibly. A 20,000 rpm motor needs a high start-up current, and Genmitsu advises checking for the older brick; its 24V supply is rated for 8–10 A at start.

What hose fits the dust shoe?

The port measures 38 mm outside and 32 mm inside, so a standard shop-vac hose or adapter in that size fits.

How thick a board can the clamps hold?

The T-Track Mini clamps accept stock up to 1.77 in (45 mm) thick.

Will the kit fit a 500W spindle machine?

No. The shoe and motor are for 42 mm 775 spindles; 52 mm machines need a different shoe.