STEP 1: Bottom Frame

CountName
1Aluminum Extrusion 2040 x 300
3Aluminum Extrusion 2020 x 300
5(3DP) BOT_BRACKETS
1(3DP) BOT_BRACKET_X_AXIS
2(3DP) BOT_RIGHT_ANGLE_CON
4(3DP) STAND
32Screw DIN 912 M4x10
32Nut f. Extrusion 2020

STEP 2: X-Axis Carriage

CountName
2Linear Rail 8mm x 300mm (X-Rails)
2Linear Rail 8mm x 244mm (Y-Rails)
4(3DP) BOT_RAIL_HOLDER
4(3DP) BOT_BEARING_MOUNT_X_AXIS
8LM8UU Linear Bearing
16Screw DIN 912 M3x6
24Nut DIN 934 M3
8Screw DIN 912 M4x10
8Nut f. Extrusion 2020
1Thin Aluminum Plate (1-2mm) 257mm x 162mm

STEP 3: Aluminum Plates and Bearing Preparation

CountName
1Aluminum Plate 200x200x6 (Drawing below)
1Threaded Rod M5x270
24Screw DIN 912 M3x8
1Nut DIN 934 M3
1Set Screw M3x6
3(3DP) BOT_BEARING_MOUNT_Y_AXIS
1(3DP) BOT_BEARING_MOUNT_Y_AXIS_DRIVEN
1(3DP) BOT_ROD_HOLDER_ALPHA_AXIS_SHORT
1(3DP) BOT_ROD_HOLDER_ALPHA_AXIS
1(3DP) BOT_HANDWHEEL

STEP 4: Alpha Axis Bearing

CountName
1Aluminum Plate (Upper) 200x240x6 (Drawing below)
9Screw DIN 912 M3x14
4Bearing 14x7x5
1(3DP) SR_BEARING_PLATE
1(3DP) SR_WORM_GEAR
1(3DP) SR_INNER_RING
1(3DP) SR_OUTER_RING_W_GEAR
4(3DP) Adapter D5 to M3x14

STEP 5: Spring Loaded Drive Assembly

Insert two M5 nuts as shown. Insert the spring and washers if necessary. The spring has to be preloaded in order to eliminate axial play.

CountName
1Spring (ID min. 6mm)
2Nut DIN 934 M5

STEP 6: Clip in Alpha Axis Assembly

Clip the Alpha Axis Assembly to the LM8UU bearings of the bottom frame.

STEP 7: Clamp Y Axis Rods

Assemble as shown. To clamp down the rods insert M3 square nuts in the respective slots and tighten the upper clamp parts down with M3 screws.

CountName
2(3DP) BOT_RAIL_CLAMP_Y_AXIS
1(3DP) BOT_RAIL_CLAMP_X_DRIVE
1(3DP) BOT_TAIL_CLAMP_Y_AXIS_1
8Screw M3x10 DIN 912
8Square Nut M3

STEP 8: Spring Loaded X Axis

Assemble according to Step 5.

CountName
1Spring (ID min. 6mm)
2Nut DIN 934 M5

STEP 9: X and Y Axis Drive Assembly

Thread the M5 rods through the spring laoded x- and y-axis drives and add two M5 nuts before the 3D-printed holders in order to secure against pulling the rods out. Tighten the pair of respective M5 nuts against each other. Add a M3 nut to each of the BOT_HANDWHEELS’s slots and secure the handwheels to the end of the rods by tightening the M3 set screw.

CountName
4Nut DIN 934 M5
2Nut DIN 934 M3
2Set Screw M3x6
2Threaded Rod M5x270
2(3DP) BOT_HANDWHEEL

STEP 10: Z-Axis Clamp Assembly

Insert the nuts into the profile, align the clamps and tighten the srews.

CountName
8Screw DIN 912 M4x10
8Nut f. Extrusion 2020
2Threaded Rod M8x140mm
2(3DP) BOT_CLAMP_Z

STEP 11: Eccenter Front

Assemble two eccenters as shown. The bottom nuts mount the M8 threaded rod to the base.

CountName
8Screw DIN 912 M4x10
4Nut f. Extrusion 2020
8Nut M8 DIN439
2Threaded Rod M8 L=55mm
2Spring (ID > 9mm)
1Handlebar (e.g. aluminum pipe) OD = 8mm
2(3DP) ECCF_HEIGHT
2(3DP) ECCF_MOUNT
2(3DP) ECCF_LEVER
2(3DP) ECCF_TOP
2(3DP) ECCF_BOT

STEP 12:Top Frame

CountName
46Screw DIN 912 M4x10
4Screw M4 (for hinges)
50Nut f. Extrusion 2020
3Aluminum Extrusion 2020 x 300
2Aluminum Extrusion 2020 x 280
2Hinges for 2020 extrusion
8(3DP) TOP_BRACKET
2(3DP) TOP_CLAMP_Z_AXIS

STEP 13: Top Frame Axis

CountName
2Linear Rail 8mm x 280mm
4LM8UU
2Spring (ID > 9mm)
4(3DP) TOP_RAIL_HOLDER
2(3DP) TOP_BEARING_MOUNT_1
2(3DP) TOP_BEARING_MOUNT_2
2(3DP) TOP_SPRING_PLATE
2(3DP) TOP_CLAMP_STOP

STEP 14: Aluminum Profiles

Please note that one of the profiles has an additional hole for an linear drive shaft. You may want to drill that hole later during final assembly. Insert the M3 nuts into the according slots and tighten the profiles to the 3D-printed parts.

CountName
12Screw DIN 912 M3x10
12Nut DIN 934 M3
2L-shaped aluminum extrusion

STEP 15: Stencil Clamp Assembly

Cut and drill the bottom l-shaped profiles. Note that one of them, as before, has a through-hole for the linear drive axis.

CountName
8Screw DIN 912 M3x10
8Nut M3 DIN439 // Square Nut M3
2L-shaped aluminum extrusion L = 198mm
6(3DP) TOP_CLAMP_NUT_HOLDER

STEP 16: Top Frame / Axis Assembly

CountName
8Screw DIN 912 M4x10
8Nut f. Extrusion 2020

STEP 17: Stencil Stretcher

CountName
2Screw DIN 912 M4x10
2Nut f. Extrusion 2020
2Nut M5 DIN439
1Threaded Rod M5 L= ~100mm
1(3DP) TOP_CLAMP_SPANNER_COUNTER
1(3DP) TOP_CLAMP_SPANNER_CASE
1(3DP) TOP_CLAMP_SPANNER_CASE_1
1(3DP) TOP_CLAMP_SPANNER_HANDWHEEL

STEP 18: Final Assembly

Assemble two eccenters as show. Tighten these to the top frame. Mount the top frame to the bottom frame assembly. Finally adjust the height of the top frame to fit your pcb holders and general setup.

CountName
4Screw DIN 912 M4x10
8Nut M8 DIN439
2Threaded Rod M8 L=55mm
1Handlebar (e.g. aluminum pipe) OD = 8mm
2(3DP) TOP_HANDWHEEL_Z_AXIS
2(3DP) ECCB_BODY
2(3DP) ECCB_LEVER
2(3DP) ECCB_SHIM

13 Thoughts on “4-Axis PCB Stencil Printer – Digital Build Log”

  • Thank you so much for publishing this!

    I have been visiting your site regularly to see if you’d had chance to publish the build log, whilst appreciating that you must be very busy with your day job. It really is very generous for you to share your hard work so others may build their own stencil printer.

    This is an excellent project and I can’t wait to build my own!

    Thanks again 🙂

  • Hi,

    Thank you for start the build log 🙂 Could you post a BOM so we can start to order the materials?

  • Hi,
    thank you for this awesome construction.
    I’m printing all the stuff at the moment. But I couldn’t find the 3d model for ‘ Adapter D5 to M3x14’.
    Is it really missing or is it a standard item that can be downloaded elsewhere?

  • Thank you very much for the work!
    Want to build it!
    Do you have plans to continue build log with upper frame description?
    If you want, i can make report about my build of your design, when it will be finished.

  • Hello. Amazing work, build one now. Can you post your pcb holders stl to thingiverse pls.

  • Hello Admin,
    the project is really helpful and I’m in the process of building this,
    can you share the build log building the top frame as well

  • Hello Dengler,

    Amazing job on building and sharing this very nice stencil printer! it’s looking really good!
    Hopefully you have been using it yourself too 😀

    I am trying to order the parts for the printer (already started some 3D printing), but I was wondering if you have any documentation on the top frame/stencil holder? It looks fairly similar to the bottom frame combined with the x-axis carriage but I do notice subtle changes here and there.

    Thanks again, great work on the design!

  • Hi, thanks for this great project! The part “Adapter D5 to M3x14” is not available in the 3D files on Thingiverse. Could you please upload it? Thank you!

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