ERCF V2.x multi-material feeder assembly render with Cotton Tail buffer, selector rails, and numbered filament gates

ERCF v3 Base Kit (Unofficial) — V2.x Hardware, No Motors

4.7 (9 reviews)
$39.99
🚚 Free US shipping at $99
Carts
Quantity
1

More payment options at checkout

📦 Ships within 1 business day · median this month: <1h

The base a v3 build starts from. This is our ERCF V2.x Community Edition hardware, sold without motors: the rods, D-cut shaft, gear sets, bearings, Binky encoder, switches, LEDs and fasteners. The v3 parts list carries most of it over unchanged.

Unofficial. dfh is not a certified ERCF v3 vendor, and the Carrot Collective has not checked or endorsed this kit. It is V2.x hardware, priced so the rest of a v3 is cheap to finish. We have sold Rabbit kits since 2021.

What you add for v3

  • Motors: the v3 direct-drive gear motor (NEMA17, 42STH48-1684 class) and a selector pancake (17HS08-1004S class). A v2-style NEMA14 gear motor also works with the v3 legacy gearbox.
  • A servo. v3 dropped the MG90S.
  • M5 taps in the ends of the 2020 extrusion. Same length as v2; the v3 backbone bolts into it.
  • The short list in the "V2.0 Upgrade" column of the official v3 parts list: one 625 bearing, extra MR85ZZ bearings and 6x3 magnets, one 2x7 MicroFit and a handful of fasteners.
  • Printed parts, a control board (MMB or similar) and 2.5 mm ID PTFE tube. The v3 documentation says not to use FEP.

Build it as a v2 instead and you add only motors, a servo, a board and tube.

Singles or a box of eight

Kits ship one at a time, or by the box of eight at a lower price per kit.

In the box

Black nickel heat-set inserts and black anodized 7075 8 mm rods, as in every dfh Rabbit kit. ERCF, ERF, ERCT, toolhead sensor, Binky, hat and toolbox.

Component 4 gates 8 gates 12 gates
Binky Encoder 1 1 1
Omron D2F-5x 7 11 16
WS2812B RGBW 6 10 14
Wire for LEDs & micro switches (per meter) 2 3 4
BMG Clone extruder gear sets 6 10 14
2020 T-Slot extrusion 147mm 1 0 0
2020 T-Slot extrusion 239mm 0 1 0
2020 T-Slot extrusion 331mm 0 0 1
8mm smooth rods 145mm 2 0 0
8mm smooth rods 237mm 0 2 0
8mm smooth rods 329mm 0 0 2
D-cut 5mm shaft 164mm 1 0 0
D-cut 5mm shaft 256mm 0 1 0
D-cut 5mm shaft 348mm 0 0 1
Cutting Blade #4 2 2 2
608ZZ bearing 5 10 15
V623ZZ or 623ZZ bearing 2 2 2
MR85ZZ bearings 6 8 9
M2x6mm or M2x8mm Self-Tapping 4 4 4
M2x8mm Self-Tapping 10 20 29
M2x8mm SHCS or M2x10mm SHCS 6 6 6
M2.5x16 SHCS 2 2 2
M3 threaded inserts (M3x5x4mm) 48 53 58
M3x3mm set screws 10 15 20
M3x6mm SHCS 2 2 2
M3x8mm BHCS 6 6 6
M3x8mm FHCS 6 6 6
M3x8mm SHCS 65 89 113
M3x12mm SHCS 8 8 8
M3x16mm SHCS 12 22 32
M3x16mm BHCS 2 2 2
M3x20mm FHCS 2 2 2
M3x20mm SHCS 11 11 11
M3x25mm SHCS 6 11 16
M3x40mm SHCS 3 3 3
M3 T-Spring nuts 23 33 42
M3 Washers 5 5 5
M3 nut DIN934 3 3 3
M5x30mm BHCS 3 3 3
M5x16mm BHCS 2 2 2
M5 nylock nuts 4 4 4
2.7mm zip ties 15 17 20
3x2mm round neodymium magnets 3 3 3
5.5 mm ball bearing 6 11 16
6x12mm compression spring with 1mm wire diameter 2 2 2
0.4x4x15 compression spring 2 2 2
6x3mm round neodymium magnets 10 20 29
MicroFit Connector Plug 4 Position (43640-0401) 5 5 5
MicroFit Connector Plug 5 Position (43640-0501) 3 3 3
MicroFit Connector Receptacle 4 Position (43645-0400) 5 5 5
MicroFit Connector Receptacle 5 Position (43645-0500) 3 3 3
MicroFit3 Female Pin (43030-0007) 32 32 32
MicroFit3 Male Pin (43031-0007) 32 32 32
Rabbit Hat 1 1 1
Tool Box 1 1 1
7X7 Drag Chain 250mm (rounded) 1* 0 0
7X7 Drag Chain 350mm (rounded) 0 1* 0
7X7 Drag Chain 450mm (rounded) 0 0 1*
ECAS04 16 28 38
Collet Clip 16 28 38
GT2 20T (6mm wide) Pulley (5mm bore) 3 3 3
GT2 20T (6mm wide) Toothed Idler (5mm bore) 1 1 1
GT2 belt 6mm (open) ~1m 1 1 1
GT2 Belt Loop (6mm wide) - 188mm 1 1 1

* May, or may not, include a full cable chain. We're running low. Still a pretty fucking great deal.

Project files and the official parts list: github.com/Carrot-collective/ERCF_v3.

Pairs well with

Builder reviews

4.7
9 reviews · real orders
5★7
4★1
3★1
2★0
1★0
Josh E.✓ verified buyer2024-12-11

Fast shipping and a great looking complete kit. Nice box included too!

Andrew B.2024-07-27

Beautiful hardware, honestly, the black heat sets, the nickel-plated fasteners, it's all awesome. Its the same price as other Community V2 kits with (in my opinion) much better hardware that leads to a more aesthetically pleasing final product. Keep it up, good stuff.

dfh replied

DO NOT INGEST THE HEAT INSERTS. <3

jason G.✓ verified buyer2024-06-29

Great kit!

dfh replied

Thank you!

Customer2024-05-06

I wrote a great essay on both the benefits and difficulties of this kit. No one will ever read it because the site decided I had taken too long and refreshed the listing for me. That is frustrating! Summary: Good: I was able to put it mostly together. Good hardware. Fun hat Bad: The wiring for the the encoder is an EPIC failure. VCC,GND,Sgignal all need separate wires and colors to keep it straight. There is also no pin crimps for the encoder header pins. None of them fit. Am I supposed to solder the wires on? If you order this make sure you have some dupont connectors and female crimp ends on hand along with a a few feet of colored sensor wire. So now modifying their listing statement "All you need is this kit, your own amount of PTFE or FEP Tube and a control board... and Dupont connectors, and colored 28awg 3 color wire and the 3d printed plastic parts"

dfh replied

Thanks for the input. All kits will now ship with a jst connector on the probe.

Amjed A.✓ verified buyer2024-04-22

Arrived quickly with great packing and organization labels. Includes all the BOM with (few extras), the hat was nice addition I could only get a glimpse of it before my kids snatch it away. Now time to start the build

dfh replied

Thank you for the review. I'm sending you an email with a coupon for a free hat on your next order. Can't let the kids have all the fun.