Flying Extruder Suspender

Description

Using A Flying Extruder Like This One Can Shorten Your Retracts From 5-7Mm Down To About 2Mm, Because It Will Shorten Your Bowden Tube'S Length From ~450Mm (For A 750Mm Tall Printer) Down To ~150Mm. If You Have A Taller Printer, This Is An Even Bigger Win. This Can Work With A Variety Of Extruders, But I'M Using It With Shane'S: Https://Www.Thingiverse.Com/Thing:245677 I'Ve Used The Shane'S Extruder On About 15 Printers, And It Has Been Very Reliable. I Like That It Is Easy To Load, Compact And That It Doesn'T Use Any Unusual Parts. I Use The Variant Which Uses An M4 Nut To Secure The Teflon Tubing And A Mk8 Drive Gear. To Build This, You'Ll Need: * 2X M3X16 Shcs * 2X M3 Nuts * 1X M3X10 Shcs * 4X M3 Nylock Nut * 3X 190Mm Long Pieces Of 3/8" Od, 1/4" Id Rubber Tubing. (These Three Pieces Need To Be Slightly Longer Than Half The Length Of The Horizontal Extrusions In A Delta Printer.) * 1X Keybak (Heavy Duty): Https://Www.Amazon.Com/Key-Bak-Retractable-Stainless-Polycarbonate-Oversized/Dp/B0088Mq9Js * 10X Small Zip Ties I Am Using This Flying Extruder In My Kumu-3D Printer Design: Http://Www.Kumu-3D.Com Here Are The Steps To Assemble The Flying Extruder Suspender: * Use An M3X10 Shcs And An M3 Nylock Nut To Attach The "Wye" To The Top Of The Motor Suspender. * Slip One End Of Each Of The Three Pieces Of Rubber Tubing Onto The Three Arms Of The "Wye", And Use A Small Zip Tie To Secure Each One. * Have An M3X35 Shcs (Or Something Similar) Go Through Each Carriage, And Extend Toward The Center Of The Printer. Slide Each Of The Small Printed Tubes (Which I Call Tubing Adaptors) Onto The Ends Of The M3X35'S, And Then Use An M3 Nylock Nut To Keep Them From Sliding Off. * Slide The Remaining Free Ends Of The Rubber Tubing Onto The Tubing Adaptors And Use A Small Zip Tie To Secure Each One. * Measure And Shorten Your Bowden Tube. On My Printers It Is About 150Mm, Down From About 450Mm. This Reduced The Retraction Settings By A Factor Of 3X! Also, You Can Probably Set Your Retraction Acceleration To A Large Value -- I'M Using 3000Mm/S^2, And The Retraction Speed Is 200Mm/S. * On My Printers I Suspend The Spool At The Top, And I Also Have A Piece Of Aluminum L-Channel Near The Front, Going Between The Top X-Z And Y-Z Horizontal Extrusions. I Used Two Zip Ties To Attach The Key-Bak To This Piece Of Aluminum L-Channel, And An Additional Zip Tie To Act As A Loose Filament Guide. * On The Key-Bak, I Removed The Split Ring, And Replaced It With A Small Zip Tie. I Used A Little Bit Of Fishing String Looped Around The Three Arms Of The "Wye", And Have The Zip Tie Running Through These Loops. This Is How The Key-Bak Pulls Up On The "Wye" To Counter The Extruder'S Weight.

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