Aurarum Wombot Exilis Guide d'installation

Kit

Assembly Instruction Manual

Wombot is a brand of

Introduction

Thank you for purchasing the Wombot Exilis Kit. Please read this assembly manual fully before beginning assembly of

your printer and ensure that you understand e ery step of the assembly process. Please check that all required

components are present before beginning assembly. E ery care has been taken to ensure that you ha e a complete kit of

components which will enable to you assemble your printer howe er should you find anything missing or damaged,

please contact us at sal[email protected] to request replacements. Please note that support for the Wombot Exilis Kit is

limited to email ser ices. Because of the nature of this product, telephone support is not practical.

Health & Safety

Your health and safety are important to us and should be your top priority at all times. Please take care while assembling

your kit, take your time and be careful when using hand tools and while handling the components used to assemble your

printer. Personal safety is ultimately your responsibility. Please ensure that your workspace is clean, tidy and free of any

safety hazards prior to beginning the assembly of your Exilis. Please take care when using sharp tools or handling

aluminium extrusion pieces – they can ha e sharp edges. Please also keep in mind that 3D Printers ha e two main areas

which can reach high temperatures – the heated bed which is capable of sustaining 110 degrees Celsius, and the

Nozzle/Hot End/Extruder, which is designed to operate at a maximum of 250 degrees Celsius. Instant and serious burns

will result from contact with the skin. Once you ha e completed the assembly of your Wombot Exilis, please also

familiarise yourself with the User Manual before attempting to print for the first time as it contains useful information on

how to calibrate and operate your Exilis as well as troubleshooting information.

Assembly Sequence Overview

Assembly needs to take place in the sequence outlined below so that each step is completed correctly and in order. This

will allow you to get your kit assembled in the shortest possible time and reduce the chances that you will ha e to

disassemble the printer later in order to repeat an important missed step. This applies especially to the sliding nuts used

throughout the frame assembly because once assembled, sliding nuts cannot be fitted later without disassembling the

whole frame.

Please take the time to read each step carefully before beginning assembly to make sure that you understand the

requirements of each module and that the required components ha e been laid out on your workspace along with the

appropriate tools.

Required Items to complete the build

All components and fasteners required to complete assembly are included with your Exilis Kit. You will also require some

basic hand tools and equipment as follows:

Base Frame odule

Step 1 – Y Idler odule Pre-Assembly

In your kit of parts, locate the following items.

ITE DESCRIPTION QTY

1 BOLT M8 X 45mm CAP HEAD 1

2 IDLER PULLEY LARGE NYLON 1

3 NUT M8 NYLOC 1

4 WASHER M8 FLAT 1

Assemble the Y Idler Module as per the following image then set it aside to be fitted later. Only tighten the lock nut until

it touches the bearing centre on the idler. If this is too tight, the idler pulley will bind rather than spinning freely.

Step 2 – Right Angle Bracket Preparation

In your kit of parts, locate the following items.

ITE DESCRIPTION QTY

5 3030 INTERNAL R/ANGLE BRACKET 8

6 BOLT M6 x 10mm CAP HEAD 16

Screw the bolts into the brackets just enough to hold them in place. Repeat for all 8 brackets.

Step 3 – Base Frame Layout

In your kit of parts, locate the following items.

ITE DESCRIPTION QTY

7 3030 EXTRUSION 410mm LENGTH 2

8 3030 EXTRUSION 340mm LENGTH 2

9 3030 SLIDING NUT M6 10

10 3030 SLIDING NUT M5 3

Lay out all Base Frame components on a clean flat surface. Arrange the Aluminium Extrusion pieces by length and insert

all Sliding Nuts and Right Angle Joints as per the images according to the Item Number in the component listing. Secure

the Y Idler Module to the frame firmly.

The Y Idler Module should be towards the left of the front rail.

TOP VIEW

FRONT VIEW

Step 4 – Base Frame Assembly

Once all sliding nuts, right angle brackets and Y idler ha e been fitted, gently slide together the frame on a flat surface

and gently tighten each of the cap head screws in the right angle brackets so that they can still be adjusted or mo ed.

Make sure that the frame is true and square before tightening the four corner brackets in the base of the frame using a

square as follows:

All corner joints must be at 90 degrees (perpendicular). Left and Right rails must be parallel as must the front and rear

rails. Use a measuring tape or ruler to make sure that the distance between each set of rails remains constant from end to

end – e en if this results in a slight gap at one end where extrusion pieces meet.

Step 5 – Fitting the stepper motors.

Once the bed base components ha e been tightened, locate the following items in your kit as per the below image.

ITE DESCRIPTION QTY

11 STEPPER MOTOR NEMA 17 3

12 STEPPER MOTOR BRACKET 3

13 BOLT M6 x 12mm CAP HEAD 6

Fit the motors into their brackets and fasten the stepper motors to the base frame loosely at the rear of the base as per

the following images, utilising the sliding nuts you fitted to the frame at the beginning. Fit but do not tighten these

motors in place yet, they must be able to slide into their final position later for correct alignment with other components.

Please note that the Y motor bracket (the one in the middle) is modified - it has a small notch cut out in one mounting

arm to a oid the bed rail which will be fitted in the next step. Please also obser e the orientation of the connectors on the

stepper motors when fitting, as per the below images:

Locate the following items in your kit and fit them as per the below images:

ITE DESCRIPTION QTY

14 SELF ADHESIVE RUBBER FOOT 4

15 PULLEY GT2 20 TOOTH 1

Fit the small rubber feet to the base in each corner of the printer frame

as well as the GT2 20 tooth pulley for the Y motor. Pulley final position may need to be adjusted later to align with belt.

Step 6 – Fitting the bed rails.

Locate the following items in your kit of parts:

ITE DESCRIPTION QTY

16 2020 EXTRUSION BLACK 410mm – PRE-DRILLED BED RAILS 2

17 BOLT M6 x 20mm CAP HEAD 4

Fit the pre-drilled rails to the top of the base frame utilising the sliding nuts that were positioned in the frame at the

beginning (do not tighten them yet, they must be able to slide into their final position). Measure out the distances as per

the image and once they are the correct distance from the side rail and each other, tighten them in place firmly. Keep in

mind that these two rails must be perfectly parallel to the side rails of the printer as well as each other in order for the

printer bed to tra el correctly and under a uniform tension while printing.

Step 7 – Assembling the Heated Bed Platform.

In your kit of parts, locate the following items:

ITE DESCRIPTION QTY

18 PRE-WIRED WOMBOT MK4 HEATED BED 1

19 SCREW COUNTERSUNK M3 x 20mm 4

20 BED SPRING 4

21 NUT M3 NYLOC 4

Fit the Countersunk M3 screw from the top side of the heated bed (side with the Wombot Logo and warning symbols)

and secure in place on the underside of the bed (side with tracks) with nyloc nuts firmly. Then simply place the spring o er

the screw so that it rests on the nyloc nut as per the below image. Repeat this for all four corners of the bed and set aside

(springs up so that you don't lose them) for for the next step of the bed assembly.

In your kit of parts, locate the following items and lay them out on your table:

ITE DESCRIPTION QTY

22 PRE-MILLED BED TROLLEY 1

23 BOLT M5 x 40mm CAP HEAD 3

24 DELRIN WHEEL BLACK 3

25 WASHER M5 FLAT 3

26 ECCENTRIC NUT M5 3

27 NYLOC NUT M5 6

28 BED SPACER ALUMINIUM 3

29 BED BELT MOUNTING BLOCK 1

30 BOLT M3 x 20mm CAP HEAD 2

31 NUT M3 NYLOC 6

An Important Note on Eccentric Nuts and their function:

Before beginning assembly of your Heated Bed Platform (or Extruder Carriage Module in a later step), it is essential that

you understand the installation and correct operation of Eccentric Nuts. Eccentric Nuts are small mechanical de ices which

resemble a normal nut. There are howe er three important differences which must be obser ed: 1. They ha e an extended

cylindrical boss (smooth external barrel) which extends past the body of the “Hex Shaped” portion of the Nut, 2. The hole

through the middle of the Eccentric Nut is not actually in the centre – it is offset to one side (indicated by a groo e in one

side of the hex of the nut closest to the perimeter of the hole). This is also referred to as being “off-centre” and 3. there is

no thread in the centre of the nut, it is a smooth bore through which a bolt or shaft can be inserted.

The purpose of an eccentric nut is to pro ide minor adjustment to the final position of an attached de ice or assembly (in

this case, a black delrin wheel/bearing). This is achie ed by securing the de ice under tension and rotating the nut to

achie e a shift in the location of the component - hence mo ing the position of the attached de ice proportionate to the

degree of rotation applied to the nut and dependent on the starting position of the off-centre hole.

Please see below images illustrating these principals and make sure you understand them before proceeding.

The same principals can be applied at a later stage to the eccentric nuts used on the Extruder Carriage Module:

Proceed by fitting the Bolts, Eccentric Nuts, Spacers and Black Delrin Wheels to the bed trolley as per the below images

while noting the orientation of the aluminium bed trolley in relation to the mounting holes in the centre and along the

edge (yellow arrows). Please also note that while the eccentrics and delrin wheels must be held in place firmly, – they

should not be o er tightened so that free mo ement is impeded. Please also take extra care that the eccentric nuts are

orientated correctly to allow for the greatest flexibility for rotation during tightening of the completed bed assembly to

the base frame.

Important Note on tensioning down the Black Delrin Bearings: This must be done ery gently and with great care.

Only tighten down the Nyloc Nuts onto the Bearing as much as is needed to stop any play between the inner bearing

hubs and the faces of the two Nyloc Nuts. They must be free spinning, but not allowed to mo e up and down the bolt

shaft. O er-tightening these bearings will result in too much friction, restricted rotation and permanent damage to the

bearings which you will then be required to purchase separately to replace.

Place the heated bed assembly from the pre ious step on your work surface (springs upward). Install the assembled

aluminium bed trolley onto the heated bed so that the M3 screws pass through the pre-drilled holes in the trolley. Fasten

with Nyloc Nuts as per the below images. Please obser e the correct orientation of the heated bed to the trolley and the

path of the wiring loom from the heated bed. Temporarily cable tie the loom to one of the two holes on the aluminium

trolley to secure it as per the yellow arrows in the following images.

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