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【Pre-owned】Neptune 4
New/Open-boxGood usedDamaged for fix upDamaged for parts ONLY

 Notices Before Purchase!

*Pre-owned machines are returned items, some of them are used ones, NOT REFURBISHED

*Pre-owned machines cannot be returned. If required repaired, parts and accessories can be purchased separately.

Shipment Tips!

*[United Kingdom] Due to high transportation costs, some preowned products (good used/for parts only/damaged) will not support delivery to Scottish Highlands, Scottish Islands, and Northern Ireland.
A: Generally, the preowned product is available in the 27 member countries of the European Union, but 5 of these countries may not support, it Bulgaria, Cyprus, Finland, Malta, and Sweden, please refer to the checkout page.
B: Due to high transportation costs, some preowned products (good used/for parts only/damaged) will only support delivery to Germany. It is shown on the product page as shipped from "DE".

Condition Notes for Pre-owned Machines:

  • New/ Open-box -> The item is in like new, never usedlassembled condition. It's returned due to buyers' remorse or fulfillment error. It may only show signs of repackaging due to our inspection service (opening the box, taking photos, recording serial #, classifying grades). It's sealed, and packaged in the original factory condition with ALL original factory parts/accessories in inspected new or like new condition.
  • Good used -> This item was inspected, cleaned, and repaired to full working order and is in overall good condition. It WILL contain aesthetic signs of wear/teas/scratches (especially on the Heat Bed). This item may be repackaged. *REMINDER- this is a used unit. NOT REFURBISHED.
  • Damaged for fix up -> The unit has damage in functionality (e.g. a bad 3 Axis X/Y/Z). It needs fix-up & touch-up to be fully functional. It usually contains signs of wears/tears/aesthetic issues such as scratches, dents/cracking. It powers on. It might miss one or ALL minor parts/hardware/accessories. Customers MIGHT need to buy up to 2 units with us in order to make 1 functional unit. Great as DIY fix-up projects for experienced DIY experts.
  • Damaged for parts ONLY -> The unit is most likely to have damaged mainboards and does NOT power on and it WILL cost more to be fully restored than being used as parts.


Good used


for fix up


for parts ONLY

Powers-On Test

Display/Monitor Test

Nozzle/Bed Heating

Testing on 3 Axis X/Y/Z

*All functional/

moving parts

*Hardware Counts



Miss one or all, Might not power on, Not Test

*All functional parts - monitor, hotend assembly(nozzle + fan), stepper motors, axis limit switches, heating unit, belts, build plate

*Hardware Counts – screws, bolts, T-nuts, plastic end caps

*Accessories – test filament, scraper, wrenches, SD cards, tubes, clips, manual. The absence of these accessories does not affect the printing function.

* If you would like to purchase a brand new one, please click here.

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