CS Caliburn 4 K14 butt

prusaprinters

<p>Two variations here, designed to allow a K14 spring to fit into the Caliburn 4 soft dart (Nerf) blaster. I'm not saying that you should, but now you can!</p><p>The <a href="https://www.blaster-time.eu/shop/foam-focus-k14-universal-spring-full-length-28-cm/?v=79cba1185463">“Foam Focus” K14 springs that I bought from blaster-time.eu</a> will fit inside <a href="https://outofdarts.com/collections/springer-parts/products/acetal-plunger-head-for-caliburn">the Containment Crew CNC machined acetal plunger you can buy from Out Of Darts</a>, as well as the Worker aluminium Caliburn plunger. <strong>The CS original printable plunger will not fit</strong> and I haven't gotten around to making a K14 version of that. I'm not sure I'd want to either, as the walls would be quite thin.</p><p>The first STL here ("orig") is a drop in replacement for the original C4_4BackB.stl but with clearance to allow it to take a K14 spring.&nbsp;</p><p>The second ("M10") is a bit more interesting. It has the same adjusted clearance, but also upgrades the internal bolt from the slightly weedy 1-¾" 10-32 bolt to an 80mm M10 bolt. A modified buttstock (C23_4Butt, provided) is also required to give clearance to the new bolt head. You will need to supply your own M10 nut and bolt!</p><p>Remix of <a href="https://www.thingiverse.com/thing:5078652">https://www.thingiverse.com/thing:5078652</a></p><p>(ignore the cardboard and rubber bands in the pic, I am just epoxy-ing everything together for greater durability…).</p>