Based off Cellstruder v1, http://www.thingiverse.com/thing:109040, except it has the ability to retract the syringe. Therefore, it has an enclosed design with a lead nut for retraction on the lead screw. It also has a switched up lm8uu holder to add a better grip over the linear bearing. Last, included is a syringe holder for a standard printed x-carrage. Enjoy! As written in Cellstruder v1 Note: Since it is enclosed you have to remove the plunger from the barrel, insert the barrel then add the plunger for the 20mL. For smaller syringes, they easily slip through. Note: Use Sli3er to slice these as other slicers might read the Stls with their inside boundary lines, such as Cura. For questions contact, [email protected]/* <![CDATA[ */!function(t,e,r,n,c,a,p){try{t=document.currentScript||function(){for(t=document.getElementsByTagName('script'),e=t.length;e--;)if(t[e].getAttribute('data-cfhash'))return t[e]}();if(t&&(c=t.previousSibling)){p=t.parentNode;if(a=c.getAttribute('data-cfemail')){for(e='',r='0x'+a.substr(0,2)|0,n=2;a.length-n;n+=2)e+='%'+('0'+('0x'+a.substr(n,2)^r).toString(16)).slice(-2);p.replaceChild(document.createTextNode(decodeURIComponent(e)),c)}p.removeChild(t)}}catch(u){}}()/* ]]> */