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Slice ENGINEERING - Copperhead™ Hotend

Original price $54.99 - Original price $99.99
Original price
$54.99 - $99.99
Current price $99.99
SKU B-CH-HO-0289-scr
Availability In Stock


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Copperhead™ Hotend

Note: Due to popular demand, the Groove Mount - G2 variant may have some lead time. Orders including this item will be shipped out when this product is available. Please be patient with us as we work to replenish our inventory.

The Copperhead is a low-cost, open-source hotend option that can handle the heat — heat creep, that is. Replace your factory model hotend with the Copperhead™, to upgrade your 3D printer’s performance and reduce jamming, giving you a smooth print every time.

Unlike most materials, plastics don’t have a clean transition from solid to liquid during melting. As filament moves through the hotend, it heats up and reaches the material’s glass transition temperature (Tg), entering a semi-solid, semi-liquid, “gooey” state. While in this state, the plastic responds to applied forces like a wet noodle, causing undesirable print effects like reduction in resolution, blobbing and jamming. An efficient heat break narrows the physical distance during which the plastic is at it’s Tg, and thus improves 3D printer performance. The Bimetallic Heat Break™ from Slice Engineering® is the only heat break designed through the use of thermal imaging to optimize heat transfer.

Use the Hotend Configurator below to see which Copperhead™ variant is compatible with your 3D Printer. Looking for technical specifications, click here.

  • 450°C temperature rating covers all printable thermoplastics
  • Eliminates heat creep through Bimetallic Heat Break™ technology
  • Versatile mounting options
  • Adjustable z-height for dual extrusion setups
  • Uses Rep Rap style nozzles (M6 x 1.0 threads with a 7 mm thread length and 12.5 mm overall length)
  • Open source - published under a (CC-BY-SA 4.0) license

For compatibility options, please see the Copperhead Page.

Technical Specifications

Included In the Box

Heat Sink

     • Selected Heat Sink

     • Mounting Hardware

Heat Break

     • Selected Heat Break

Hot Block

     • Selected Hot Block

     • The Best Orange Lollipops You've Ever Had

Dimensions and Weight

All dimensions and weights provided below are for reference only. For full product definition, please refer to the CAD Models & Downloads section below

-Heat Sink

Copperhead Heat Sinks come in two different variants to adapt to numerous mounting applications. 

     Mounting mechanism: Groove Mount - G2

       Size: 41.5 mm high x 19.75 mm wide x 28 mm diameter
       Weight: 17.1 g

     Mounting mechanism: Screw Mount - G2

       Size: 31 mm high x 19.75 mm wide x 28 mm diameter
       Weight: 12.4 g

-Heat Break

Copperhead Heat Breaks come in multiple variants to adapt to numerous 3D printers. Use the 3D Printer Compatibility Chart below to determine which Bimetallic Heat Break is best suited for your application. 

NOTE: Only the Standard  - G2 Variant fits the Copperhead
™ Heat Sink

Standard - G2 Variant - fits Copperhead™ Heat Sink & Raise3D Pro2

Definition: M6x1.0 threaded hot section, 6 mm smooth cold section

Size: 21 mm length x 6 mm diameter
Weight: 4.0 g

RepRap 1.75 Variant - fits E3D V6, Prusa 3D printers & more

Definition: M6x1.0 threaded hot section, M7x1.0 threaded cold section

Size: 23 mm length x 7 mm OD
Weight: 4.2 g

Mk 8 Variant - fits Makerbot Replicator & more

Definition: M6x1.0 threaded hot section, M6x1.0 threaded cold section

Size: 27 mm length x 6 mm OD
Weight: 4.3 g

Mk 10 Variant - fits MakerGear printers & more

Definition: M6x1.0 threaded hot section, 7.78 mm shank with flats on cold section

Size: 27 mm x 7.78 mm OD
Weight: 8.1 g

C-E Variant - fits Creality Ender/CR-10 Series printers & more

Definition: M6x1.0 threaded hot section, 6.98 mm smooth cold section

Size: 28 mm x 6.98 mm OD
Weight: 6.1 g

C-Pro Max Variant - fits CR-10S Pro/Max Series & more

Definition: M6x1.0 threaded hot section, M6x0.75 threaded cold section

Size: 23 mm x 6 mm OD
Weight: 3.2 g

LGX Variant - fits Bondtech LGX Extruder

Definition: M6x1.0 threaded hot section, LGX compatible cold section

Size: 17.5 mm x 6 mm OD
Weight: 2.8 g

-Heat Block

The Copperhead Hot Block is available in one variant that fits all Copperhead Heat Breaks. It features an M6x1.0 tapped hole to fit Rep Rap style nozzles. A Rep Rap style nozzle is characterized by its M6x1.0 threads, 7 mm threaded length, and 12.5 mm overall length.

Size: 27 mm wide x 12.5 mm tall x 15.5 mm deep (w/ retaining screws)
Weight: 18.0 g

Installation Instructions, CAD Models, Downloads, and Adapters

Installation Instructions:

• Copperhead™ Installation Instructions


• Copperhead™ Groove Mount w/nozzle• Copperhead™ Screw Mount w/nozzle

Dimensional Drawings:

• Copperhead™ Drawings


• Copperhead™ STEP Files


• Prusa Mini Copperhead™ Groove Mount Adapter• Prusa Mk3s Copperhead™ Groove Mount Adapter• Prusa Mk3s Copperhead™ Screw Mount Adapter• Creality CR-10s Pro Copperhead™ Groove Mount Adapter (Requires 25x25x10 mm fan) Creality CR-10s Pro Copperhead™ Screw Mount Adapter (In Progress)

Should I get the Mosquito® or the Copperhead™?

The Mosquito® and the Copperhead™ share our Bimetallic Heat Break™ technology, are both designed for high performance applications, and are beautifully designed and machined in America; but the similarities end there. The Copperhead™ is a traditional style hotend aimed at reducing heat creep and improving high temperature performance. It is the more budget conscious option. The Mosquito® has a radical design featuring a protective roll cage around the most thermally efficient heat break (85%!) available on the market. It allows for cold, one handed nozzle changes. Both options improve performance, so the choice is yours!

For compatibility options, please see the Copperhead Page.

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order.  We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Cancellations & Refunds/Returns:

Before accepting a return on a product that isn't functioning as it should, Project 3D Printers reserves the right to exhaust any and all means to resolve and/or repair the malfunction through technical support and replacement parts provided by both the manufacturer and Project 3D Printers.  No return will be accepted without reasonable attempts to resolve the issue(s) first.  All returned products must be returned within 10 days of date of purchase.

Project 3D Printers enforces a strict "No Returns Accepted" policy for opened and/or partially used products, including filament, resin, or any consumable of any size and weight that has been used or opened from its factory and vacuum seal.  Only products and consumables that are unused, and in brand new factory condition are eligible for return to the manufacturer of origin within 10 days of the purchase date.

If a product is found to be non-functional or defective, the product must be returned with its full original contents within 10 days of the delivery date for inspection of the non-functionality.  If the product is found to be defective or non-functional a full-refund will be given, not including return shipping at the customer's expense.

All orders cancelled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped.  If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.  Buyer is responsible for and pays a 20% restocking of the value of the returned item(s).  Buyer pays all shipping fees for the returned item(s). 

Customs Fees, Tariffs, Duty Fees and Import Taxes:

Only customers are responsible for their local import taxes, tariffs, duty fees and import taxes incurred during shipping.  To know about your customs import duties please contact your local customs office with this details  (HS Code :8477 Product description: 3d printer or 3d printer kit). If the tax amount is high, we can provide assistance to reduce it.


We work very hard to ensure that we offer the absolute best prices online.  If you find another online store that offers a lower price than us within six months of your purchase date please let us know and we will refund your original payment for the difference.  We want you to feel confident that you are getting the absolute best price for the product you are ordering.  If you find that our own website has a lower price for the same item you have ordered within six months of your purchase date will refund the difference as well.

To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.

Our 100% Price Guarantee has some limitations:

  • You must purchase the item from our website before requesting your Price Match Guarantee
  • Promotions such as rebates and buy one, get one free offers are not eligible
  • The item must be in stock on the competitors website
  • The competitor must be an online store, they may not have a retail location
  • The website can not be a discounter or auction website (ie; eBay, overstock, etc..)
  • The competitor must be an Authorized Retailer of the product in question
  • The Price Match Guarantee includes the item price and the shipping charges, it excludes sales tax