Welcome to my store e4u2011 Description Please Note: You can choose the PTFE tubing according to your needs.If you want a different length for tubing,please contact us via ebay message or leave a message. This is a 0.4mm nozzle for 1.75mm filament bowden J head extruder.If you want to change the size of it,please leave us a message. The Bowden principle The Bowden cable lets you reduce the moving mass of the extruder and thus allowing faster controlled motion, less shaking of your machine, less energy use and importantly: faster printing! Normally the mechanism that drives the filament into the hot end (where it melts) is directly on top of the extruder. This creates problems of balance and oscillations with faster motion which you can see in your printing results and hear and feel when your machine is shaking. If the filament drive mechanism is placed on a non-moving part of the 3D printer, it can be pushed into a tube. PTFE (Teflon) is useful because it is slippery: it has little friction with the plastic.This limits wear and loss of energy. The tube's other end is connected to the extruder's hot-end. The concept of using a Bowden cable as guide was suggested and pioneered by Ed Sells. The main advantages All metal enables working with Polycarbonate up to 300 degrees Celsius and with future materials that require higher working temperatures beyond those supported by plastic extruders and hot end. Tested with PLA, ABS, polycarbonate, nylon and PVA. Features The inner diameter of the bowden feed mouth is 4mm to print with 1.75mm filament,and 6mm to print with 3mm filament. The J-head is assembled with 100K NTC thermistor and Cartridge heater,NOT heat resistor. And it also assembled with a cool fan. Check the following specifications for the assembled heater. Materail: Stainless Steel,PVC,Nylon Voltage: 12V Power: 40w Wire Length :1m Heater size: 6x20mm(D*L) PTFE tubing Length:1 meter Outer diameter:4mm or 6mm Inner diameter:2mm or 4mm Material:teflon Color:white Package List 1 x assembled Geeetech All Metal J-head hotend Please click here and take several minutes to have a look at our store.You will find something more useful and interesting. Payment 1.We accept PayPal only. 2.Payment must be received within 7 business days of auction closing.,or a unpaid case will be opened. Delivery details 1.Standard shipping carrier is ePacket with tracking code for United States address,delivery within 7-14 busienss days. 2.For outside US address,standard shipping carrier is Hong Kong Post without tracking code,delivery within 25-30 business days.We provide a free tracking for order above 45USD.Please contact us if you want to add a tracking code for small orders. 3.Express shipping like DHL,Fedex,UPS,TNT is also avaiable if you are willing to pay extra.DHL is our standard shipping carrier for Expedited shipping,please contact us if you want a different carrier. 4.For orders overweight (above 2kg), we must use Express shipping, it normally takes 5-7 busienss days to deliver. We will contact you if your orders are overweight, please note that buyer are resposible for the shipping charge. Return policy 1.All returns are accepted. 2.You should contact us within 14 days after you received the item. 3.Return shipping will be paid by you. Contact us 1.We are always here for you,offering friendly, comprehensive customer service every step of the way. Please follow the good eBay practice to contact us if any doubts and problems.We sincerely hope our item and customer service can give you the BEST BUYING EXPERIENCE on eBay. 2.We believe nothing can solve problems but communication.Please contact our team via ebay message first before leaving any non-positive feedbacks if you feel unhappy here. Terms of sales 1.Customs duties or taxes are buyer's resposibility for all of the listings.Please check with your local customs office if you have any doubts. 2.Please confirm you are putting a correct and complete shipping address here.You are resposible for extra charge if your package been returned because of wrong address.If packages return because of wrong address,you will have to bear extra cost of shipping. Engineered for professional eBay sellers!
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