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MINGDA Rock 3 Pro 3D Printer 2021

Newest 95% Pre-Assembled with Glass Be

Light and Fast Direct Extruder Dual Z

TMC2208 Silent Printing


MINGDA 3D Printer rock 3 Pro


Fully Upgraded Extruder Rock 3pro adopts a newly upgraded print head, which combine the hot end and extruder integrated design, more scientific and efficient. The dual gear direct drive extruder is lighter than traditional extruder. Both the Teflon tube and the nozzle equipped with a fan, easy to dissipate heat.

Babystep Precise Control Built-in babystep control function, you can precisely control the layer distance through the babystep on the screen to achieve finer printing. The firmware have updated for easy and stable printing.

Silent Motherboard with TMC2208 Rock 3pro built-in 5 Group TMC2208 on the MINGDA self-developed motherboard, you will not hear annoying noises when printing.

Upgraded Dual Z Axis The dual lead screw rod of the Z axis adds a synchronous belt, so the screw rods are be turned synchronously and always keep at the same height. In addition, the Z-axis screw rod is equipped with an anti-backlash spring,  which can eliminate axial backlash and improve printing accuracy.

Belt Tensioner on X and Y Axis Equipped with a belt tension adjuster on X and Y axis, you can easily adjust the belt tension to the appropriate position as you want. One year warranty and lifetime technical support.


MINGDA Rock 3 Pro, The 2021 Most Advanced Direct Drive Extruder 3D Printer

  • Dual lead screw rod Z axis, with synchronous belt, more stable moving Z.
  • Dual rail on Y axis, more stable Y axis.
  • 5 group TMC2208 on motherboard for control the stepper motors, silent printing.
  • Upgraded firmware with babystep fuction, more precise printing.
  • With belt tension adjuster, easy to adjust the X and Y axis belts
  • Branded 360W power supply, fast heating, powerful and safe.
  • Equipped with a upgraded filament run out detecor, 360 degree freely rotating.
  • Resume printing function, save filament and time.
  • Come with glass bed for printing.
  • 3.5 inch colorful touch screen, user friendly UI, easy to use.
  • Limit switches on X, Y and Z axis.
  • 12.6x12.6x15.75 inch(320x320*400mm)large build volume.
  • Neat and safe cables.

new direct drive extruder

The Most Advanced Direct Extruder

New Upgraded Direct Drive Extruder

  • Hotend, nozzle, extruder and fan integrated design, 30% lighter than traditional extruder, up to 200mm/s moving speed.
  • Direct drive design extruder, built in dual gear inside for extruding filament, stronger extrusion force, easy to print flexible filament TPU.
  • Dual fan, both the Teflon tube and the nozzle equipped with a fan, easy to dissipate heat.
  • Scientific extruder and more precision printing.


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