This is a grip for the Sliding Legolini to allow the forward hand to squeeze the grip and Sliding Legolini bow frame together when aiming to take pressure from the arm used to extend the bow. Force required to keep the bow stretched is mostly removed from the shoulder, tricep, and back of the forearm to nearly completely be handled by the front of the forearm.  This makes aiming much easier, similar to using a crossbow.

The original design by Martin100000 on Thingiverse used a much bulkier grip stock making it difficult for those with smaller hands to squeeze the grip and bow together comfortably.  Shaving down the grip to a minimal profile needed that follows the bow curvature makes it much easier to use.

Slicer Settings (Cura)

• Material - PETG
• Orientation - sitting on the Aim Accessory slide mount
• Layer height - 0.2
• Wall line count - 3 
• Infill density - 95%
• Infill pattern - cubic
• Support - Required
• Build plate adhesion - None

My 3d printer tolerance is 0.3mm; so, the grip slides snugly over the original Sliding Legolini Aim Accessory mount. 

A STEP file is provided.