Summary

The trebuchet design seems the best out of what's on thingiverse but it seemed a little over engineered for a toy. I didn't want to find and buy 10mm tube so I decided to print them and they worked well. I also skipped on the m3 rod down the middle of the beam and instead used m3 screws at both ends. I was lazy and didn't design a new counter weight but thought the coin slot was a bit limiting so I cut away to add any weights I wanted to use.

Print Settings

Rafts:

No

                                            <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.1</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>15%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>print vertically.  I printed at .1mm so that the fit would be tight.  I sanded the outside of both cylinders a little bit to have smooth motion between parts.  I did this quickly by sticking the cylinders in a drill and holding a piece of sand paper to them for a few seconds.</p></div>

trebuchet alternative plastic parts