Pilot Explorer Gel pen adapter for Pentel Energel

After looking high and wide for a capped pen body that was Pentel Energel 0.5mm compatible, I finally found the Pilot Explorer Gel line. The Pentel Energel LRN5-A 0.5mm needle tip is my favourite refill, and it almost fits perfectly inside this pen body, safe for a small gap that makes the tip wobble and press in and out depending on pressure when writing. 

To fix this, I created this very simple adapter that press fits onto the refill top, sits flush with the outside diameter of the refill and fills the space between the refill and the pen body.

Printed at 0.15mm layer height to ensure dimensions are correct.