FREEADAPTER4TH coupon code will get you a $15 discount on a #makerbot 1/4"-20 female to M6-1.0 male thread adapter with an additional purchase of $45 at Jerrill.com. That makes the nozzle adapter FREE with the purchase of 2 or 3 #printrbot nozzles! #3dprinting
http://www.jerrill.com/shop/printrbot-nozzle-adapter-m6-1-male
May or may not work with an E3D hotend too - our nozzles are M6x1.0 threaded, but I don’t know the length of this adaptor. @Jerrill_Johnson if you want a hotend to develop with just get in touch and I’ll get you one out free of charge.