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Longer LK1 PRO

Auto Bed-Leveling

3D Printer

Main Features:

300 x 300 x 400mm printing size
4.3-inch large color touch screen, know the printing status and parameters at a glance
● Brand-new smartphone style UI design, better user experience, more sense of technology
● Displays printing status through the color-changing breath lights, standby: flash green, red: heating, printing: blue

Matrix auto-leveling, detects the hotbed is completely horizontal or not by testing 16 points on it, advanced automated setting up
● More successful in 3D printing with filament run-out protection
TMC ultra-quiet drive, effectively reduce the printing noise, no annoying buzzing
Dual Z axis rods and motors, providing more powerful and stable printing

● High-speed turbo fan cooling, can withstand long-time printing of complex models
Big hand-screw nuts for more convenient to manual leveling
● Efficient heating and uniform temperature provided by the high-power hotbed with aluminium substrate, glass build platform and PC sticker
● Simple and integrated wiring, say goodbye to messy wires

Please click here to download the open source code of Marlin

Printing size: 300 x 300 x 400mm
Platform material: 3mm integral heated aluminium substrate, high temperature resistant PC film
Platform temperature: 50 - 100 Celsius degree
Filament: 1.75mm PLA, ABS

Longer LK1 Pro PDF


Brand: Longer 3D 
Model: LK1 Pro 
Type: Complete Machine 
Material (Frames): Metal 
Platform board: Aluminum Alloy 
Nozzle quantity: Single 
Nozzle diameter: 0.4mm 
Nozzle temperature: 190 -220 Degree Celsius 
Layer thickness: 0.1-0.4mm 
Memory card offline print: TF card 
LCD Screen: Yes 
Print speed: 50mm / s 
Supporting material: ABS,PLA 
Material diameter: 1.75mm 
Language: Chinese,English 
File format: G-code,OBJ,STL 
Model supporting function: Yes 
XY-axis positioning accuracy: 0.0125mm 
Z-axis positioning accuracy: 0.0025mm 
Voltage: 110V/220V 
Working Power: 24V 
Host computer software: Cura 
Packing Type: Assembled packing 
System support: Windows, Linux, MAC 
Connector Type: USB

Dimensions and Weight

Product weight: 12.8000 kg 

Package weight: 16.6000 kg 

Product size (L x W x H): 38.20 x 38.20 x 41.00 cm / 15.04 x 15.04 x 16.14 inches 

Package size (L x W x H): 69.20 x 51.20 x 30.20 cm / 27.24 x 20.16 x 11.89 inches

Packing Contents:
1 x Printer Frame
1 x Printer Mainframe
1 x Filament
1 x Filament Holder
1 x Bag of Cable Ties,
1 x Trowel
1 x Pointed Nose Shear Forceps
1 x Wrench Bag
1 x Slotted Screwdriver
1 x Card Reader
1 x SD Card
1 x Open End Wrench
1 x Power Cord
1 x Data Cable
1 x Needle
2 x Auto-leveling Height Auxiliary Plate
1 x 16 M5 Screws
1 x 20 M5 Screws

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

Lost, Stolen, Damaged:

Project 3D Printers is proud to partner with Route, the leader in package protection and tracking solutions. By selecting Route+ at checkout your order will be protected from damage, loss*, or theft. In the unfortunate case that your order never comes or is broken upon arrival, you can easily file a claim with Route and receive a replacement or be fully reimbursed. We are excited to offer this service to you and we highly recommend you use Route+ package protection at checkout.

*Claims for packages marked "delivered" must be filed after 5 days and before 15 days from the date the package was marked "delivered." Claims for packages presumed to be lost (where the status is not "delivered") must be filed after 7 days (20 days for international) and within 30 days from the last checkpoint.

If a customer opts out of Route shipping coverage, please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrived damaged, please send photos to and we will process an insurance claim on your behalf.

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 30 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 30 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 30 days of purchase 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