3ntr A4 V2 User manual

User manual 3d printers
A4v2
A2
image shows optional printer stands
V.191102
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Congratulations
We want to thank you for the purchase and the trust you granted us.
The product you are going to use is the result of months spent into research, development and co-
design with our suppliers.
Our priority is letting you use a reliable tool, giving you years of trouble-free use.
This manual we will teach you all the use and maintenance duties you could face during the entire
lifetime of our printer(s) should you find any inaccuracy or simply need more information, feel
absolutely free to contact us at
[e-mail]
The manual has been prepared trying to list ALL the steps needed to perform each duty it may
look boring, but we invite you to resist and read thoroughly before committing to machine use.
You will avoid waste of time, getting you to a good knowledge level.
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Important safety advice
Your printer has been built with user safety as main concern, yet it must NOT be used by
individuals with reduced mental or physical abilities.
This printer is not a toy, is meant to be used by fully responsible and knowledgeable people and
printing area must be kept locked in presence of children or people with serious mental problems.
Safety issues to be considered
•Risk of burns hot surfaces are involved into the printing process. To minimize risks, be sure
not to access any part inside the printing area while printer is working. Once printing
process is finished, wait until printed part(s) cool down to room temperature, or use
protective gear (gloves) to remove finished prints.
•Risk of pinching machine can suddenly start even if the power of actuators is low, the
speed is high enough to hurt. Don't access machine until printing process isn't completed
-or- the machine is remotely actuated (i.e. using a print server).
•Risk of fire don't turn on printer close to flammable substances. Don't use any flammable
substance to clean the machine inner parts. Do not use any spray product inside printer.
Allow correct printer ventilation don't obstruct air inlets and outlets, keeping them free from
dust and other contaminants.
•Risk of toxic fumes wrong temperature settings may cause toxic fumes emissions. Be sure
to follow guidelines and settings from supplier of your filament. Use printer in a well vented
room. If possible use machine smoke exhaust port.
•Electrocution do not use in presence of condensing moisture and/or conductive dusts.
Disconnect AC power cord before accessing inner parts. Do not attempt any maintenance
work on electric or electromechanical parts. Promptly report any electrical malfunctioning
•Electromagnetic compliance this is a class A product. In a domestic environment this
product may cause radio interference in which case the user may be required to take
adequate measures.
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LIMITED WARRANTY
This Limited Warranty applies to Jdeal-Form products ( 3ntr A4 , 3ntr A2 ) (" Products") sold in the
European Union, Iceland , Liechtenstein, Norway and Switzerland after January 1st, 2014.
* CAUTION ! As from point (H) of this document, this Limited Warranty does not affect any legal rights
under the applicable national law. *
(A) Warranty Jdeal-Form DECLARES and warrants that the Products shall substantially conform to the
published specifications published as from the date of delivery, subject to the terms and conditions below.
Consumable parts are not covered filament, SD card, and removable trays. ("Supplies", defined as
disposable products, parts or components of the product, which are inherently subject to wear and tear
during normal operation of the product).
(B) Upgrade and Compatibility
1. Firmware Jdeal-Form is committed to make available any update firmware (microcode for machine
management) for standard machines produced. Any changes on the hardware required may preclude this
possibility.
2. Hardware compatible with technological development, Jdeal-Form communicate regularly on the site
www.3ntr.net the availability of updates and improvements to the hardware (mechanical parts) of the
systems sold.
(C) The warranty claim is valid if the following conditions are met
1. The notification must be issued within the end of the warranty period, as defined below;
2. Notification must be in accordance with any stipulation of additional collateral as defined below;
3. Shall be substantiated with proof of original purchase, including the serial number of the product.
(D) Handling of complaints
1. Jdeal-Form will repair or replace hardware (or hardware parts) non-compliant, in a commercially
reasonable time for Jdeal-Form or his authorized representative as solely determined by Jdeal-Form or his
representative
2. Jdeal-Form shall bear the cost of repair and / or replacement and shipping costs incurred therein,
provided, however, that the return is authorized by an RMA number, and that you have followed the
correct procedures for returning defective parts as from the documentation provided.
3. Spare parts and / or products will be new or reconditioned and will be provided on an exchange basis. If
defective parts are not returned, Jdeal-Form will issue an invoice for the parts provided. All replaced parts
or products become the property of Jdeal-Form.
(E) Guarantee Period twelve months from the date of issue of the invoice.
(F) Exclusions The obligations of the limited warranty does not cover physical damage caused by
improper use during transport, as well as normal wear and tear of use of the product. The limited warranty
is void if the alleged defect in the product was caused wholly or in part by
1. Modifications, alterations or repairs
2. Parties or supplies that were installed without being approved by Jdeal-Form or his designated
representative, including without limitation the use of filaments not supplied by Jdeal-Form;including
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without limitation the use of filaments not supplied or explicitly approved by Jdeal-Form or its local
resellers.
3. Unusual physical or electrical stress
4. The abuse, misuse, accident, neglect
5. Exposure to moisture, flooding, fires, electrical problems associated with the input power or other acts
which are not related to Jdeal-Form
6. Failure to follow the procedures for maintenance or failure to follow instructions and / or the product
documentation;
7. No coverage under this limited warranty will exist if Jdeal-Form has not been notified of the alleged
defect or malfunction prior to the expiration of the Warranty Period. Jdeal-Form shall proceed to a final
determination regarding the existence and cause of any alleged defect.
(G) How to obtain warranty service.
To make a claim under this Limited Warranty, please contact your authorized dealer where you purchased
the product, or contact Jdeal-Form by e-mail ([e-mail].)
(H) Limitations / Warnings.
This limited warranty is sole and exclusive remedy by the end-user against Jdeal-Form where permitted
by law and subject to paragraph (h). Except for this limited warranty, Jdeal-Form provides no other
warranties express or implied with respect to the performance of any product. Without limiting the
foregoing, all implied warranties, including warranties of merchantability or fitness for a particular purpose,
are excluded. Jdeal-Form disclaims all liability for indirect, incidental, collateral, exemplary, punitive,
special or consequential, including loss of use or loss of profits, even if Jdeal-Form has been advised of
the possibility of such claims or damages.
(I) statutory laws
1. Certain countries, regions, provinces do not allow the exclusion or limitation of remedies or incidental
damages, punitive or consequential damages, or the applicable terms, so the limitations or exclusions
may not apply to you.
2. Except to the extent permitted by law, this limited warranty does not exclude, limit or modify the rights of
law applicable where the product is sold, rather it is in addition to these rights.
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npacking
We carefully packaged your printer , to protect it from rough handling usually involved with
international freight. Therefore, if despite our efforts, you are being delivered a damaged package
you should always refuse delivery or put your remarks on the delivery bill.
Package (palletized) usually consist of
•Printer
•Print tray
•AC power cable
•USB cable
•print area door keys
•3mm ABS spoolh
•3mm HIPS spool
•purchased options
To unpack machine never use cutters that could pierce packaging and damage content. Please
follow the procedure
1. Remove plastic straps, using scissors. Should the printer arrive inside a wooden box,
don't use crowbars to open use a screwdriver to remove cover and side panels
2. Remove cover
3. Remove packaging foam/bubbles don't use cutter blades!
4. Remove packaging side panels
5. If a pedestal has been delivered, assemble it taking care to tighten ALL the bolts.
6. If you didn't buy a pedestal, be sure that the printer will be placed on a sturdy enough
surface
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Installation
Before committing to lifting printer from the shipment pallet, be sure to have the means to lift
weights over 30 g:
•A4 printer: two people will suffice to lift it from ground level to the destination desktop
•A2 printer: best scenario is using a forklift to bring the pallet+printer at pedestal lever
(approx 70cm) then three-four people can lift the printer and position it at the destination
placement
IMPORTANT: printers have several mechanical parts below lower plate, therefore DON'T LIFT the
printer alone with forklift or transpallets
Once machine is resting on pedestal/desktop, open the front door inside printing area you will find a box
containing USB cable, AC cable, filament feeders with PTFE piping, spool holders, trial spools.
Before connecting AC power, you must mount the supplied devices.
Procedure is same for all printer models.
The spool holders need to be secured tightening the 13mm nut.
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Fig 1: Spool holders

Each filament feeder must be fitted with its own PTFE piping before mounting it on the printer.
Screw the threaded part of piping on the filament feeder, as shown in fig.2, taking care about
•piping won't touch bronze feeding roller
•piping won't be overtightened, stressing (and possibly narrowing) the PTFE pipe
A2 printer only longest pipe is to be placed on feeder #1 (rightmost, when looking on the rear side).
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Fig. 2: Mounting PTFE piping on filament feeder
Fig. 3: Feed PTFE in the rear openings

After placing fitting PTFE piping on filament feeder, you can mount feeders on printer, feeding the PTFE
piping thru printer opening on the rear, above each feeder position.
Each feeder has a “mandatory” position please refer to fig 7 and 8 for respective printer models.
Extruder #1 (rightmost, when looking at rear side of printer) has longer cabling, to allow its use with optional
feeder (SPFU) for use with soft polymers.
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Fig 4: lock feeder into rear seating” holes
Fig 5: electrical wiring connection

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Fig 6: mounting remaining feeders (if possible, route the cabling behind
gearboxes)
Fig 7: feeder layout of A2 printer

When feeders are mounted and wired, you can connect PTFE piping on extruders-
Before going on, remove blue lock parts (circlips) on tube adapters hold them with nails or tweezers and pull
sideways.
Front-side extruder is the #1, therefore has to be fitted with leftmost PTFE piping (looking from frontal printer
area).
Connection is performed simply inserting PTFE pipe into tube holder, pushing it until fully seated then locking
putting back on the blue locking collar.
Perform same duty with remaining extruders, taking care not to entangle piping.
Now you can load the filament to be used take one spool, remove it from packaging media and use a pencil
sharpener (or scissors) to get a cone-like tip. If initial length of filament (5 cm approx) is bent, straighten it as
much as you can to ease initial feeding process. For further details refer to “filament loading” section in
following pages.
Now you can connect the printer to AC socket with the supplied cable.
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Fig 8: Extruders ready!

sing the printer with your computer
We urge you to use a PC at least at the beginning once you build enough experience then you will be able
to switch to more advanced printing methods (SD card, print servers).
Therefore you need to physically connect your PC to the printer (supported OS are Windows 7/8, Mac,
Linux).
Be sure to use the shortest possible USB cable long cables will pick up electrical noise (= transmission
problems = lost prints). Also, be sure to be using best possible quality cables (shielded).
Most operating systems will discover new devices and install for you the needed drivers if your PC won't be
able to offer this capability, you can still download the drivers from this site
http //www.ftdichip.com/Drivers/VCP.htm
Please refer to above web site for installation instructions on you specific PC architecture.
After making sure that your PC is connected to the printer, you can install printer management software.
Several programs are available
•Cura ( http //software.ultimaker.com/ )
•Repetier Host ( http //www.repetier.com/ )
•Simplify3d ( http //www.simplify3d.com/ )
Our choice goes to Repetier Host, being the most complete and advanced solution to perform any task you
will ever need to perform. We will therefore offer support just for this package please download from
Repetier website the most up-to-date package for you operating system and follow supplied installation
procedure.
Once software is properly installed and running, please select the language to be used now onward we will
use the ENGLISH setup for the screen images. Clicking on PRINTER SETTINGS icon you will be shown the
setup screens.
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Fig 9: Repetier host language setting
Fig 10: Repetier
Host - printer
setting

Connector usually must be left on “Serial connection”.
Port select the port you will use to connect to the printer. The above shown is just an example
according to the periperals connected to your PC (inkjet printer, mouse, webcam, camera,
smartphone,...), the printer will be connected to a surely different port number. You can use the
REFRESH PORTS button to force an immediate update of available USB ports list.
Baud rate set it to 250000
Other parameter must be left unchanged at default values (see fig.1).
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Fig. 11: Connection parameters

We recommend to set printer defaults as from above figure.
You may want to un-check the following options
•Send ETA to printer this option is sending to the printer the time remaining printing time.
It's a useful option, but makes for a slight flickering of the LCD display (when printer
updates the time left) that can be disliked by some people. You can surely disable this
option without regrets, if you want.
•Disable Extruder after Job/Kill we recommend to leave ON this option. Otherwise, should
your print process finish Friday night and you leave you printer ON for the weekend, you
may be getting extruder jam, requiring a nozzles change on Monday (some polymers like
PLA or PVA may seriously degrade in few hours time).
•Disable heated bed after job/kill if you disable this option, your heated bed will be
constantly ON, shortening therefore the time between different prints. Be careful, as this
option will increase your chances of burning your fingers, along with higher electricity bills.
Keeping a pair of kitchen gloves nearby will help.
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Fig. 12: Printer parameters

This tab will let you set the extruder characteristics.
You must set the number of extruders available on your printer and each nozzle diameter (standard
supply is 0.4mm but other sizes are available).
IMPORTANT be sure to change preset color of each extruder (default is yellow for each one) to get
easy preview of the multi-extruder prints !
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Fig. 13: Extruder control

This tab will let you set you the print area dimensions, using the values as from following table
Xmin Xmax Pds Ymin Ymax Pdd Largh. Prof. Alt.
A2 0 610 0 0 350 0 610 350 500
A4 (2 ex) 0 300 0 0 200 0 300 200 200
A4 (3 ex) 0 300 0 0 175 0 300 175 200
.
Be sure that ALL the Home X/Y/Z settings are set to MIN failing to do so you could not be able to use your
printer!
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Fig. 14: Printer shape

Printer use
Loading filament
To prepare the filament to be used, just two simple steps are required
1. Make a cone-like tip to the filament end, using a pencil sharpener or a scissor, to improve
insertion process
2. Usually, filaments retain the spool curvature, therefore straightening the filament's end will
ease the insertion in feeding device.
To feed filament
1. Grab feeding device handle and lock it open using the pivoting ring on the handle
2. Feed the filament into the hole on the lower part of feeding device
3. Push in the filament until it stops when it reaches the extruder assembly
4. Release the locked feed handle
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Fig. 15: Rear printer side

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Fig. 17: Filament feeders, the one in foreground is locked open (disengaged)
Fig 16: Straightened and pointed filament

The knob above each feeding device sets the pressure on the feeding roller more pressure will
improve traction but will increase the chances of ruining the filament.
The pressure is set correctly when during feeding and retraction the handle is not moving up and
down (symptom of feed roller “chewing”) the filament).
Filament removal – idle machine
Filament cannot be removed when machine is “cold”, as it will be melt inside extruder, therefore to remove it
you need to follow those easy steps
1. Set the extruder at 70% of working temperature (usually almost all polymers start softening at 160°-
170° C, enough to remove filament)
2. When required temperature is reached, grab the feeder handle and lock it open
3. Pull and remove filament from machine
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Fig 18: Loaded spool, feeder engaged