THE_TUMBLER (MXG-4) dry sift

IMPORTANT !!!

this ist the early bird Version for my community. u can already rebuild it but u will Need a Controller. ist made for my MXbox-prototype as an alternative u can use a nema17 Controller like this:

https://www.amazon.de/Nizirioo-Schrittmotor-Treiber-R%C3%BCckw%C3%A4rts-Treibersteuerung-Pulsgeschwindigkeits-Winkel-Steuermodul/dp/B0CL4WXBMY/ref=sr_1_6

^^i will provide u a controller mount for this in the next few days.

if u need support while building it join my GERMAN discord and ask for tumbler.

https://discord.gg/XZ73qs7q8T

changelog:

30.09.2026 - fixed short_pdc_case

31.08.2026 - added a dust cover with more tolerance

25.08.2026 - added mount for amzn controller
                     - added a funnel for filling the drum

20.07.2026 - added BOM

1. Assembly of Bearing Side A

1.1 Prepare required parts

Prepare all required parts for assembling Bearing Side A.

Printed parts:
• 1x Base
• 1x Body
• 1x Bolzen
• 1x Knob
• 1x stug_support_15mm

Metal parts:
• 2x M3 x 16 mm socket head cap screw
• 4x M3 x 10 mm countersunk screw
• 4x M3 x 10 mm socket head cap screw
• 1x M3 x 6 mm button head screw
• 2x M3 x 4 mm set screw
• 1x shaft, 60 mm
• 1x spring, ID ≥ 6 mm / OD ≤ 9 mm / L ≥ 40 mm

1.2 Preassemble knob with shaft

Required parts:
• 1x Knob
• 1x shaft, 60 mm
• 2x M3 x 16 mm socket head cap screw
• 1x M3 x 6 mm button head screw

Assembly:
• Insert the shaft into the knob.
• Secure the shaft with the M3 x 6 mm button head screw.
• Screw both M3 x 16 mm socket head cap screws fully into the knob.

Note:
• The shaft fits very tightly.
• If necessary, help carefully with a hammer.
• The shaft must be inserted all the way to the stop.

1.3 Assemble body, spring, and pin

Required parts:
• 1x Body
• 1x spring
• 1x Bolzen
• 2x M3 x 4 mm set screw
• preassembled knob with shaft

Assembly:
• Insert the spring into the Body.
• Guide the knob with shaft through the Body and spring.
• Press the Bolzen onto the shaft.
• Secure the Bolzen with the two M3 x 4 mm set screws.

Note:
• The Bolzen fits very tightly on the shaft.
• If necessary, help carefully with a hammer.
• The shaft should protrude approx. 3 mm from the Bolzen.
• Do not overtighten the set screws.

1.4 Mount base

Required parts:
• 1x Base
• 4x M3 x 10 mm socket head cap screw
• preassembled locking unit

Assembly:
• Place the Base over the locking pin.
• Screw the Base to the Body using 4x M3 x 10 mm socket head cap screws.

Note:
• 4x M3 x 10 mm countersunk screws, stug_support_15mm, and the locking unit are needed later; keep them safe.

1.5 Check locking pin

Check:
• Pull the knob back.
• Rotate the knob by 90°.
• The protruding screws must rest against the Body.
• The locking pin must stay retracted.
• Rotate the knob back by 90°.
• The locking pin must spring forward by itself.

Note:
• The locking pin must move smoothly.
• Check again later after installation in the Eurobox for rubbing or binding.

2. Assembly of Bearing Side B

2.1 Prepare required parts

Prepare all required parts for assembling Bearing Side B.

Printed parts:
• 1x Stug_20mm
• 1x stug_adapt

Metal parts:
• 1x flange, 5 mm
• 1x shaft, D 5 x 30 mm
• 3x ball bearing, 5 x 11 x 5 mm
• 5x M3 x 12 mm socket head cap screw
• 4x M3 x 8 mm socket head cap screw

2.2 Assemble flange with shaft and bearings

Required parts:
• 1x flange, 5 mm
• 1x shaft, D 5 x 30 mm
• 3x ball bearing, 5 x 11 x 5 mm

Assembly:
• Insert the shaft into the flange.
• Tighten the set screw on the flange firmly.
• Place 3x ball bearings onto the shaft.
• Let the shaft end flush with the front of the ball bearings.

Note:
• There are currently still tolerance issues with the bearings.
• If the fit is loose, secure each bearing individually with a small drop of superglue between shaft and bearing.
• Important: Do not let glue run into the bearing.
• Alternatively, place a little adhesive tape over the shaft and press the bearings onto it.

2.3 Mount flange assembly with Stug

Required parts:
• 1x stug_adapt
• 1x Stug_20mm
• preassembled flange with shaft and bearings
• 4x M3 x 8 mm socket head cap screw

Assembly:
• Screw the flange with shaft and bearings to stug_adapt.
• Use 4x M3 x 8 mm socket head cap screws.
• Place Stug_20mm onto the bearings.
• Press Stug_20mm all the way to the stop, using a hammer if needed.

Check:
• The pin (Stug_20mm) must rotate freely.
• Slight running noise is okay.
• Set the assembly aside for later.

3. Assembly of Magnetic Coupling A

3.1 Prepare required parts

Note:
• The current 3D printed parts may differ from the photos.
• The design was adjusted afterwards.
• Coupling A should ideally be printed from TPU.
• TPU is recommended, but not mandatory.
• Tested so far: CC3D TPU 72D and Prusament TPU 95A.

Printed parts:
• 1x (TPU)_Kupplung_A
• 1x (PETG)_Dust_Cover
• 1x (PETG)_Base

Metal parts:
• 7x M3 x 8 mm socket head cap screw
• 6x neodymium magnet, 10 x 5 mm
• 1x shaft, 60 mm
• 1x washer, 5 x 10 mm
• 1x ball bearing, 5 x 16 x 5 mm
• 4x M4 x 6 mm heat-set insert
• 1x pulley, 20T, cover removed

3.2 Insert magnets

Required parts:
• 1x (TPU)_Kupplung_A
• 6x neodymium magnet, 10 x 5 mm

Assembly:
• Insert 6x neodymium magnets from the back into (TPU)_Kupplung_A.
• Press the magnets in fully.
• Make sure they sit flush.

3.3 Prepare pulley

Required parts:
• 1x pulley, 20T
• 1x 60 mm shaft from the kit as a holding aid

Assembly:
• Remove the cover from the 20T pulley.
• Use pliers for this.

Note:
• Removal is difficult, but possible.

3.4 Mount pulley in Coupling A

Required parts:
• 1x (TPU)_Kupplung_A
• 1x prepared 20T pulley
• 4x M3 x 8 mm socket head cap screw

Assembly:
• Insert the pulley from the back into (TPU)_Kupplung_A.
• Secure the pulley from the front with 4x M3 x 8 mm socket head cap screws.
• Tighten only lightly.

3.5 Secure shaft in pulley

Required parts:
• preassembled Coupling A with pulley
• 1x shaft, 60 mm

Assembly:
• Insert the shaft into the pulley from the back.
• Secure the shaft with the set screws on the pulley.
• Viewed from the front: leave the shaft set back approx. 2 mm behind the pulley.

Note:
• The shaft must not end flush with the front of the pulley.

3.6 Prepare base

Required parts:
• 1x (PETG)_Base
• 4x M4 x 6 mm heat-set insert
• 1x ball bearing, 5 x 16 x 5 mm
• preassembled Coupling A
• 1x (PETG)_Dust_Cover

Assembly:
• Insert the heat-set inserts into (PETG)_Base.
• Insert the ball bearing into (PETG)_Base.
• Set (PETG)_Base, Coupling A, and (PETG)_Dust_Cover aside for later.

4. Assembly of the Motorbox

4.1 Prepare required parts

Prepare all required parts for assembling the motorbox.

Printed parts:
• 1x Slider
• 1x Body
• 1x cover
• 1x Display_Mount

Metal parts:
• 4x M4 x 18 mm button head screw
• 4x washer, 4 x 12 mm
• 2x washer, 5 x 10 mm
• 1x pulley, 60T
• 2x ball bearing, 5 x 11 x 5 mm
• 1x timing belt, GT2, 200 mm
• 1x motor, NEMA 17
• 1x pulley, 20T
• 2x M3 x 4 mm heat-set insert
• 2x M3 x 30 mm socket head cap screw
• 2x M3 x 6 mm socket head cap screw
• 4x M3 x 12 mm socket head cap screw
• 1x M3 x 8 mm socket head cap screw
• 3x M3 x 6 mm countersunk screw

Note:
• Some parts are needed later; keep remaining parts safe.

4.2 Prepare slider, body, and cover

Required parts:
• 1x Slider
• 1x Body
• 1x cover
• 2x M3 x 4 mm heat-set insert
• 2x M3 x 6 mm socket head cap screw
• 2x ball bearing, 5 x 11 x 5 mm

Assembly:
• Insert 2x M3 x 4 mm heat-set inserts into Slider.
• Screw 2x M3 x 6 mm socket head cap screws into Body.
• Screw them in all the way to the stop.
• Insert 1x ball bearing into Body and 1x into cover.
• Press the ball bearings in all the way to the stop.

Note:
• If necessary, help carefully with a hammer.

4.3 Mount motor and 20T pulley

Required parts:
• 1x motor, NEMA 17
• 1x Slider
• 4x M3 x 12 mm socket head cap screw
• 1x pulley, 20T

Assembly:
• Screw the NEMA 17 motor to the Slider.
• Use 4x M3 x 12 mm socket head cap screws.
• Pay attention to the position of the motor cable and connector.
• Place the 20T pulley onto the motor shaft.
• Tighten the pulley.
• Let the pulley end flush with the motor shaft.

Note:
• Align cable and connector position as shown in the photo.

4.4 Insert slider with motor into body

Required parts:
• preassembled Slider with motor
• 1x Body
• 1x timing belt, GT2, 200 mm
• 2x M3 x 30 mm socket head cap screw
• a little lubricant

Assembly:
• Place the timing belt onto the 20T pulley.
• Loosen the pulley briefly if needed.
• Apply a little lubricant to the sides of the Slider.
• Insert Slider with motor and belt into Body.
• Screw 2x M3 x 30 mm socket head cap screws into the Slider from the back.
• Screw them in only far enough so they do not fall out.
• The Slider must remain fully movable.

Note:
• There is very little space between Slider and pulley.
• The Slider must move freely.
• Some force is okay, but it must not be too stiff.
• Please report tolerance issues directly.

4.5 Set motorbox aside

Assembly:
• Set the motorbox aside for later.
• Keep remaining parts safely together.

Remaining printed parts:
• 1x cover
• 1x Display_Mount

Remaining metal parts:
• 4x M4 x 18 mm button head screw
• 4x washer, 4 x 12 mm
• 2x washer, 5 x 10 mm
• 1x pulley, 60T
• 1x M3 x 8 mm socket head cap screw
• 3x M3 x 6 mm countersunk screw

5. Assembly of the Screen Drum

5.1 Insert heat-set inserts

Required parts:

Printed parts:
• 3x meshplate_3.9_hole
• 6x keil (kurz)
• 3x keil (lang) (1)
• 6x strebe_für_druck
• 2x klemmring

Metal parts:
• 15x M3 x 3 mm heat-set insert
• 14x M3 x 4 mm heat-set insert
• 6x M3 x 6 mm heat-set insert

Assembly:
• Insert 5x M3 x 3 mm heat-set inserts into each meshplate_3.9_hole.
• Insert 1x M3 x 4 mm heat-set insert into each keil (kurz).
• Insert 2x M3 x 4 mm heat-set inserts into each keil (lang) (1).
• Insert 1x M3 x 6 mm heat-set insert into each strebe_für_druck.
• Insert 1x M3 x 4 mm heat-set insert into each klemmring.

Note:
• meshplate_3.9_hole is currently used for the Tumbler kit.
• Insert heat-set inserts straight.
• Do not insert them too deep.
• Do not overheat the plastic.

5.2 Fold supports

Required parts:
• 6x strebe_für_druck
• preheated print bed
• towel

Assembly:
• Fold strebe_für_druck until the latch locks in place.
• Ideally fold directly after printing.
• Parts should still be evenly warm.

Alternative:
• Preheat the print bed according to the material.
• Place cooled supports on the print bed.
• Warm briefly and fold carefully.

Recommended:
• Warm the supports longer on the print bed.
• Cover them with a towel.
• Evenly warm supports bend more easily.
• The parts warp less this way.

Note:
• Test with one support first.
• Do not heat all supports at the same time.
• The closed support does not have to be perfectly parallel.
• Slight warping is not a problem.
• Alignment improves later through additional parts.

5.3 Mount bearing pin and magnets

Required parts:
• 1x seite_lager
• 1x lid
• prepared Stug unit with stug_adapt
• 6x neodymium magnet, 10 x 3 mm
• 5x M3 x 12 mm socket head cap screw from Bearing Side B

Assembly:
• Insert 6x neodymium magnets into seite_lager and lid.
• Pay attention to polarity.
• Screw the prepared Stug unit with stug_adapt to lid.
• Use 5x M3 x 12 mm socket head cap screws.

5.4 Preassemble first strut assembly

Required parts per strut:
• 2x keil (kurz)
• 1x keil (lang) (1)
• 2x folded strebe_für_druck
• 1x meshplate_3.9_hole
• 4x M3 x 10 mm countersunk screw

Preparation:
• Mark the center of keil (lang) (1) by hand.
• A later version will have a printed center mark.

Assembly:
• Lightly squeeze the folded strebe_für_druck.
• Slide the first keil (kurz) into the support.
• The support latches must engage in the slots of the wedge.
• Slide keil (lang) (1) in up to the center mark.
• Squeeze the support firmly if needed.
• The latches must sit in the grooves of the wedges.
• keil (kurz) must remain movable.
• Stiffer movement is okay, but it must not be fixed.
• Screw keil (kurz) to meshplate_3.9_hole.
• Also screw the first hole of keil (lang) (1) to meshplate_3.9_hole.

Note:
• This step takes a little practice.
• Always check movement of keil (kurz).
• Perform steps 5.4 to 5.6 a total of 3 times.

5.5 Mount second support

Required parts:
• preassembled strut assembly
• 1x folded strebe_für_druck
• 1x keil (kurz)
• remaining M3 x 10 mm countersunk screws

Assembly:
• Insert keil (kurz) into the folded strebe_für_druck.
• Do not push the wedge fully backward yet.
• Screw keil (kurz) to the preassembled strut assembly in the outer hole.
• Slide the second support onto keil (lang) (1).
• Push both supports together until flush.
• Tighten the remaining screws.

Check:
• Loosen and retighten the screws one by one.
• Firmly squeeze the supports while doing this.
• Latches must lock cleanly into the wedges.

5.6 Visual check of struts

Check:
• Check the connection points of the struts.
• Small gaps are okay.
• Slight warping is okay.
• The struts do not have to sit perfectly parallel.
• Correct any strongly crooked assembly.

Note:
• If the connection looks roughly like in the photo, it is correct.
• The assembly will align itself a little more later.
• Perform steps 5.4 to 5.6 a total of 3 times.

5.7 Mount Coupling B

Required parts:
• 1x (TPU)_Kupplung_B
• 1x side_kpl
• 6x neodymium magnet, 10 x 5 mm
• 3x M3 x 6 mm socket head cap screw
• 1x M4 x 12 mm button head screw

Assembly:
• Insert 6x neodymium magnets into (TPU)_Kupplung_B.
• Pay attention to polarity relative to Coupling A.
• Screw (TPU)_Kupplung_B to side_kpl.
• Use 3x M3 x 6 mm socket head cap screws.
• Screw the M4 x 12 mm button head screw into side_kpl.
• Leave the screw protruding approx. 3 mm.

Note:
• The magnets must later attract Coupling A, not repel it.
• Do not screw in the M4 screw all the way to the stop.

5.8 Adjust magnetic coupling

Required parts:
• Coupling A set aside earlier
• mounted Coupling B with side_kpl

Assembly:
• Place Coupling A onto Coupling B.
• Use the M4 screw in side_kpl for calibration.
• Adjust the insertion depth of the M4 screw.

Adjustment:
• One side of the coupling touches directly.
• The opposite side has approx. 0.8 mm gap.
• Adjust the gap using the M4 screw.

Check:
• Turn Coupling A by hand.
• It should turn slightly stiff.
• It should noticeably “jump” step by step.
• Too little resistance: screw the M4 screw in deeper.
• Not rotatable: unscrew the M4 screw further.

Note:
• The M4 screw sets the slip-clutch function.
• Make only a rough adjustment; fine-tune later if needed.

5.9 Connect struts with bearing side and Side KPL

Required parts:
• 3x prepared strut assembly
• 1x seite_lager
• 1x side_kpl
Preparation:
• Completely remove support material from seite_lager and side_kpl.

Assembly:
• Insert 3x strut assemblies into seite_lager.
• Press the struts into the intended holes.
• Use force and a hammer if needed.
• Place side_kpl on top as a cover.
• Press the struts into side_kpl one by one.
• If needed, help with the palm of your hand or a hammer.

Note:
• The fit is very tight.
• There is currently almost no tolerance.
• This has been checked several times and basically fits.
• Do not use unnecessary force.
• Please report real tolerance issues.

5.10 Screw struts to side parts

Required parts:
• preassembled drum assembly
• 6x M3 x 12 mm button head screw

Assembly:
• Screw the struts to the side parts.
• Use 6x M3 x 12 mm button head screws.
• Tighten screws evenly.

Note:
• Do not strip the threads.
• Struts must be firmly connected to the side parts.

6. Prepare Eurobox and Mount Assemblies

6.1 Mark drill holes

Required parts:
• Eurobox
• drilling template, bearing side
• drilling template, motor side
• marker

Note:
• The drilling templates are intended for the black Euroboxes used in the beta test.
• The shown example uses a combined model.
• The motorbox can be mounted on the left or right side.

Assembly:
• Place the drilling template against the outside of the Eurobox.
• Mark the drill holes cleanly.
• Check the position before drilling.

Drill holes on bearing side:
• Large center hole: at least 15 mm.
• If using 15 mm, drill very accurately.
• The locking pin must not rub later.
• Drill M3 holes with approx. 3.5 mm.

Drill holes on motor side:
• Drill center hole for 5 mm shaft with approx. 6 mm.
• Drill outer M4 holes with approx. 4.5 mm.

6.2 Mount motorbox and base

Required parts:
• prepared motorbox with motor
• 1x (PETG)_Base
• 4x M4 x 18 mm button head screw
• 4x washer, 4 x 12 mm

Assembly:
• Place the motorbox on the outside of the Eurobox.
• Use 1x washer per screw.
• Place (PETG)_Base against the inside of the Eurobox.
• The ball bearing in (PETG)_Base must face the inside of the Eurobox.
• Screw motorbox and (PETG)_Base together with 4x M4 x 18 mm button head screws.
• Tighten screws evenly.

6.3 Mount Coupling A and 60T pulley

Required parts:
• 1x (TPU)_Kupplung_A
• 1x pulley, 60T
• 2x washer, 5 x 10 mm
• preassembled motorbox with belt

Assembly:
• Insert (TPU)_Kupplung_A through the Eurobox from the inside.
• Insert 1x washer between (TPU)_Kupplung_A and (PETG)_Base.
• Guide the 60T pulley under the belt.
• Slide in the slider with motor.
• Pull (TPU)_Kupplung_A back slightly if needed.
• Insert 1x washer between motorbox-Body and 60T pulley.
• Slide the 60T pulley onto the shaft.
• Push (TPU)_Kupplung_A all the way to the stop.
• Also push the 60T pulley all the way to the stop.
• Fix the 60T pulley with the set screws.

Check:
• There must now be 2x washer, 5 x 10 mm installed.
• 1x between (TPU)_Kupplung_A and (PETG)_Base.
• 1x between motorbox-Body and 60T pulley.
• Belt must sit cleanly on 20T and 60T pulleys.

6.4 Install dust cover

Required parts:
• 1x (PETG)_Dust_Cover

Assembly:
• Place (PETG)_Dust_Cover onto (TPU)_Kupplung_A.
• Click the dust cover into place.

Check:
• Dust cover sits cleanly on the coupling.

Note:
• The coupling may still rub against the dust cover at this point.
• This is still okay here.
• The second bearing seat in the motorbox cover is not installed yet.

6.5 Tension belt

Required parts:
• preassembled motorbox

Assembly:
• Carefully screw in the M3 x 30 mm socket head cap screws on the underside of the motorbox.
• Tighten both screws alternately step by step.
• Screwing them in takes some time because the screws are long.
• Pull the motor slider until it is flush with the bottom of Body.
• Once slider and Body are flush, the final tension is almost reached.
• From this point, only tension carefully.
• While doing so, rotate (TPU)_Kupplung_A inside the box.

Check:
• Coupling should rotate crisply.
• Coupling must not run stiff.
• Always tighten both tension screws alternately.

Note:
• Do not tension one side only.
• Increase belt tension slowly.

6.6 Mount motorbox cover

Required parts:
• 1x lid with inserted ball bearing, 5 x 11 x 5 mm
• 1x washer, 5 x 10 x 1 mm
• 2x M3 x 6 mm countersunk screw

Assembly:
• Place the washer onto the shaft at the 60T pulley.
• Place lid onto the motorbox.
• Secure lid with 2x M3 x 6 mm countersunk screws.

• Shaft must run cleanly in the ball bearing.
• Coupling must not rub strongly.

6.7 Mount display holder

Required parts:
• 1x Display_Mount
• 1x M3 x 8 mm socket head cap screw
• 1x M3 x 6 mm countersunk screw
Assembly:
• Place Display_Mount against the lid of the motorbox.
• Secure with 1x M3 x 8 mm socket head cap screw.
• Additionally secure with 1x M3 x 6 mm countersunk screw.
Check:
• Display_Mount must sit firmly.

6.8 Mount locking unit

Required parts:
• prepared locking unit
• 1x stug_support_15mm
• 4x M3 x 10 mm countersunk screw
Assembly:
• Place the locking unit against the outside of the Eurobox.
• Hold stug_support_15mm against it from the inside.
• Screw both together using 4x M3 x 10 mm countersunk screws.
• Tighten screws evenly.
Check:
• Locking pin must not rub against the Eurobox.
• Pull the knob back.
• Rotate the knob by 90°.
• The protruding screws must rest against the Body.
• The locking pin must stay retracted.
• Rotate the knob back by 90°.
• The locking pin must spring forward by itself.

6.9 Mount control unit

Required parts:
• prepared MX-Box
• MX-Box enclosure
• 2x M3 x 6 mm socket head cap screw
• a little lubricant
Assembly:
• Insert MX-Box into the enclosure.
• Screw the enclosure together with 2x M3 x 6 mm socket head cap screws.
• Lightly grease the dovetail connection.
• Slide the MX-Box enclosure onto the holder.
Note:
• The fit is very tight.
• Light greasing prevents the layers from binding.
• Without lubrication, the control unit may be difficult to remove again.

7. Mount Mesh

7.1 Mesh notes

Note:
• The screen drum is designed for stainless steel mesh.
• Nylon mesh will probably also work, but is not explicitly intended.
• Stainless steel mesh from AliExpress is used.
• Comparable mesh is also available on Amazon, usually much more expensive.
• Required mesh width: 30 cm.
• Required mesh length depends on the drum diameter.
• For this drum: approx. 59.4 cm.
• A standard 30 x 90 cm mesh sheet is more than enough.

Link:
• [INSERT LINK TO STAINLESS STEEL MESH]

7.2 Prepare mesh

Required parts:
• stainless steel mesh
• scissors or side cutters
• ruler / caliper
• marker
Assembly:
• Cut mesh to size.
• Cut out one corner on the left and right side of one short edge.
• Cutout per side: 10 mm wide.
• Cutout depth: 5 mm.
• Mesh becomes narrower on the left and right at this edge.
Check:
• Check cutouts as shown in the photo.
• Do not leave any loose wires protruding.

7.3 Attach mesh to first mesh plate

Required parts:
• prepared screen drum
• prepared stainless steel mesh
Assembly:
• Loosen the 4x countersunk screws on one meshplate_3.9_hole.
• Do not fully remove the screws.
• Loosen only enough so mesh-cover can be lifted slightly.
• Slide the short edge with the cutouts under mesh-cover.
• Align the mesh flush with the drum on the left and right.
• First tighten the two middle countersunk screws lightly.
• Check alignment again.
• Then tighten all countersunk screws.
Check:
• Mesh must end flush on the left and right.
• Supports must sit correctly.
• Check support position one last time before final tightening.

7.4 Wrap mesh tightly around the drum

Required parts:
• scissors or side cutters
• ruler / caliper
Assembly:
• Bend the mesh slightly downward at the clamped area.
• Wrap the mesh tightly around the drum.
• Bring the mesh back to the start strut.
• Cut the mesh at the height of the screw holes of the start strut.
• Fold the mesh end back approx. 5 mm.
• Place the mesh end on meshplate_3.9_hole.
Important:
• Mesh must not be cut too short.
• If necessary, do not fold the end back.
• It is important that the mesh end rests on meshplate_3.9_hole.
• Ideally, the mesh end does not cover any screw holes.
Measurement:
• Reference length in my build: approx. 594 mm.
• This length is only a rough guideline.
• Recommended: cut mesh to approx. 600 mm length.
• Measure length without the folded-back end.
Check:
• Mesh should lie tightly against the drum.
• Check cut and fold as shown in the photo.

7.5 Secure mesh end

Required parts:
• 1x mesh-cover
• 5x M3 x 6 mm button head screw
Assembly:
• Place mesh-cover centered on the start strut.
• Initially secure loosely with only 1x M3 x 6 mm button head screw.
• Slide the cut and folded mesh end under mesh-cover.
• Align mesh flush with the drum on the left and right.
• Check alignment.
• Secure mesh-cover with 4x additional M3 x 6 mm button head screws.
Check:
• Mesh must also end flush on the left and right at the end.
• Mesh must not sit crooked under mesh-cover.
• Check orientation as shown in the photo.

7.6 Mount remaining mesh covers

Required parts:
• 2x mesh-cover
• 10x M3 x 6 mm button head screw
• pointed screwdriver
Check:
• Check the mesh thoroughly again.
• Mesh must sit as tightly as possible around the drum.
• Mesh must not sit crooked.
Assembly:
• Pierce the mesh with a pointed screwdriver at all visible heat-set inserts.
• Use 5x M3 x 6 mm button head screws per mesh-cover.
• Place remaining mesh-cover parts and screw them down.
• Tighten screws evenly.
Note:
• Only pierce the mesh once it sits cleanly and tightly.
• Do not push unnecessarily large holes into the mesh.

7.7 Mount clamping rings

Required parts:
• 2x klemmring
• 2x M3 x 30 mm socket head cap screw
Assembly:
• Insert 1x M3 x 30 mm socket head cap screw into each klemmring.
• Screw it only lightly into the heat-set insert.
• Place klemmring around the drum side.
• Position the opening of klemmring at the start strut.
• Align klemmring flush with the drum side.
• Place the tongue of klemmring into the groove of the drum side.
• Tighten klemmring.
• Close the opening gap to approx. 5 mm or less.
Check:
• klemmring must sit cleanly in the groove.
• klemmring must end flush with the drum side.
• Mesh is pressed slightly into the groove when tightening.
• Mesh tightens a little more during this.
Note:
• The heat-set insert in klemmring is a little difficult to insert.
• Retighten the clamping rings once after a short operating time.
• This area settles slightly during initial operation.

7.8 Insert screen drum

Required parts:
• fully assembled screen drum
• prepared Eurobox
Assembly:
• Release or lock the locking pin.
• Hold the drum from the side at the reinforcements / support feet.
• Lower the drum straight and vertically into the Eurobox.
• Move the drum as far as possible toward the bearing side.
• Keep enough clearance between the coupling parts.
• Lower the drum further until the magnetic coupling engages.
• Let the bearing side slide into its holder.
• Let the locking pin engage.
Check:
• Drum must sit cleanly in bearing side and magnetic coupling.
• Drum must not fall out.
• Locking pin must engage and disengage freely.
• Turn the drum by hand and check its run.
Removal:
• Release locking pin.
• First lift the drum on the bearing side.
• The magnetic coupling releases.
• Remove the drum upward from the Eurobox.
Note:
• The side reinforcements may be slightly in the way during insertion.
• Holding the drum at these points makes insertion easier.
• Locking is not strictly required, but useful.
• If assembled correctly, the lock holds the drum very firmly.