Sliding Legolini – Pump-Action Repeating Mini Bow

This project is based on the ideas of Jörg Sprave from The Slingshot Channel, combined with several of my ideas, solutions and optimization for 3D printing.

If you like this project and appreciate my work, you can support me through PayPal.

How it works? You can see here or here.

If you want to shoot very fast you also need to make ammo clips: version A or version B or version C.

Sliding Legolini is the 3D printed pump-action repeating mini bow with integrated quiver (magazine) for 6 arrows (bolts) and thumb triggered release. Bow is powered by TheraBand black tube rubber and has integrated ergonomic grips for both hands. Standard 160-161 mm long bolts (for pistol crossbows) can be loaded manually or automatically with additional ammo clips, after deflecting the magazine spring. Aiming is carried out using a laser sight or an additional red dot sight (with adapter mount).
The bow arms span is 360 mm. Total length about 402 mm (with large back grip).
Draw weight is up to about 22 lbs with TheraBand tube black.
Mass weight (bow only): about 0,55 kg
Mass weight (with bolts and laser sight): about 0,65 kg

Building this bow is not difficult, and the end result is a lot of fun.

Detailed instruction on how to make this mini bow can be found in the file:
Sliding_Legolini_Bow.pdf
Read it all before you start doing anything! Make sure you have the latest version.
Save my time. Before you ask a question, read the comments first, and you may find the answer there.

If you do everything correctly you will enjoy a very nice toy. I must admit that at short distances this “toy” is very precise and really powerful. The fun is great.

Enjoy!
Łukasz J.

2020-03-19
Added “German” version of STL file magazine part1 with a custom 16 mm rail
and dedicated “german ” adapters for a regular 15×68 mm round laser.
All because in this country a laser intended for weapons mounted on a standard 11 mm or 22 mm rail is illegal.

Thingiverse SUCKS! I can’t write the file names correctly.

2020-03-20
Added “combined_magazine_part1+2” STL file. If you have a 3D printer with a larger print bed you can only print this part instead of magazine_part1 and magazine_part2.

2020-03-22
Updated Sliding_Legolini_Bow.pdf.
To increase the life expectancy of a string, I recommend using an additional heat shrink tube. In a simple way, such a piece of shrink tube significantly extends the life of the string and increases the reliability of the bow.

2020-03-24
Added STL files with prefix “separated_“.
If you do not want to print standard bow parts with integrated hooks (bowarm, bow grip) because you are afraid of damaging the parts during their separation after printing, you can use STL files with the prefix “separated_ “. In this case, you need to use additional supports in the slicer to print these parts separately.

2020-03-25
Added STL file “mirrored_bow_slider_for_left_handed”
Updated Sliding_Legolini_Bow.pdf. Some issues have been clarified.