Earth Preparation Assistant

I designed this small garden tool because I found it cumbersome to individually punch holes for each seed. The tool is adjustable in 1cm increments, and the tines are held in place by stainless steel balls and springs, easily adjustable by hand. I recommend printing the base with a 0.2mm nozzle if you want the version with the scale.

A 0.4mm nozzle will not print this correctly.

The following parts are required for assembly.

Spring 0.5x5x25 (depending on the number of tines)

8mm stainless steel ball (depending on the number of tines); I have also drawn a plastic version as an alternative.

4x M3x40 set screws

Wear safety glasses when assembling the tines, as there is a risk of the spring or stainless steel ball entering the eye!!!

Assembly Instructions

1. After printing, check if the tines move smoothly on the rail; rework if necessary.
2. Slide the end plate into the groove on one side.
3. Insert the spring into the tine.
4. Engage the tine slightly.
5. Place the stainless steel ball onto the spring.
6. Press the spring with the stainless steel ball into the tine and slide the tine onto the rail.
7. Repeat steps 3 to 6 until all tines are assembled.
8. Attach the remaining end plate as in step 2.
9. Attach the handle with 4x M3x40 screws.
10. Functional test: are all tines movable? If so, enjoy! 😊
11. If not, check if the spring and stainless steel ball move smoothly.
12.  

Wear safety glasses when assembling the tines, as there is a risk of the spring or stainless steel ball entering the eye!!!