Precision Solder Paste Stencil Printer with Vacuum

A high precision solder paste stencil printer using an XYZR stage and a vacuum motor to pull stencils tight
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updated May 10, 2024

Description

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This is a precision solder paste stencil printer I designed to make assembling circuit boards that much easier. It is based on an XYZR stage which precisely adjusts the circuit board relative to the stencil. A vacuum motor is added to pump the inside of the printer down and pull the stencil tight to the PCB. All the parts are either 3D printed or available off the shelf.

I printed this out of ESD safe PETG, but any filament should work if you're not overly concerned about ESD. Supports are required in a couple places. I used tree supports on the printer base to support the ceiling of the vacuum motor compartment and the filter boss. I printed the vacuum door flat with supports and used PLA as an interface material.

Check out my Youtube video of the build here, where I explain it in more detail, show how it goes together, show it in use, and have links to everything I've used:

 

Parts I used:

Dirt Devil vacuum - https://amzn.to/3ycafez

XYZ Stage - https://amzn.to/4dy2RdA

Rotation Stage - https://amzn.to/3wvUJcQ

Footswitch - https://amzn.to/3UEtXXA

Ball bearings - https://amzn.to/3UVFdR5

4-40 screws - https://amzn.to/44EkioF

8-32 screws - https://amzn.to/3wuy80h

M4 screws - https://amzn.to/3UVFy6j

¼” x ½” shoulder bolts - https://amzn.to/3JYrLFu

Gas struts - https://amzn.to/4bwTgBR

Threaded inserts - https://amzn.to/4byi1xK

Soldering iron tips for inserts - https://amzn.to/3JXnnqi

As an Amazon Associate I earn from qualifying purchases.

 

You'll need heat press inserts to put this all together:

2x 10-24 for the stencil frame

3x 8-32 for the stencil frame

8x 4-40 for the vacuum door

4x 8-32 for the printer base

2x 4-40 for the printer base

 

I recommend buying assortments of the screws you'll need to that you can fine tune the screw lengths. M4 screws are also required to hold the PCB Platform to the XYZR stage.

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The author marked this model as their own original creation.

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