Prusa i3 MK2(s) & MK3 Spool Holder - Frame Mount - Top Loader

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###Update 2019/01/10 Added An Image Showing In Which Position The Single Parts Should Go. You Can Also Explore The Object Interactevly On A360 Following This Link Https://A360.Co/2Dbpg7G ###Update 2018/04/20 Important Note: If You Have An Original Prusa I3 Mk2.5 Or An Mk3, Print The Mark 3 Version! Due To The Redesigned Extruder Unit On Both Versions, The Print Head Will Hit The Mark 2'S Mounting On High Z Positions. The Mark 3 Is Specifically Designed To Avoid This And Also Fits For The Mk2 (Non-2.5) Version! ###Update 2018/04/14 I Added A Revisited Version Of The Screw/Bolt, Calling It Mark3_Spoolholder_Bolt.Stl And Of The Spacer, Calling Mark3_Spoolholder_Bolt.Stl. It Is A Cleaned Up Version Which Fits Better Into The Spool Holder Arm'S Holes. Many Complained That The Bolts Are A Pain To Get Into The Arm'S Hole And I Heard You Loud And Clear. However, Sometimes It'S Hard To Get The Time Reserved For These Kinds Of Projects. Don'T Worry If The Bolt Sits Too Loose In The Arm. The Provided Spacer Goes Between Arm And Wheel. It Keeps The Wheel From Having Contact With The Arm And Locks The Bolt When You Tighten The Nut. Both, The Nut And The Spacer Press Against The Bearing On Its Inner Ring. Therefore, There Is A Continuous Mechanical Tension Keeping Everything Locked In Place Without Hindering The Rotation. *** This Spoolholder'S History Goes Far Back Into Mid-2016 When I Received My First Original Prusa I3 Mk2 With Its Terrible Spool Arm. It Was A Pain To Switch Spools, Primarily If The Spool'S Width Differed. Adjusting The Arm On The Frame Was Tedious, And At Some Point, One Arm Even Broke. Therefore, I Looked On Thingiverse For Alternatives And Found The Top-Loader Spool Holders Like Mine Ended Up Being Too. However, All Of These Designs Back In The Day Had Some Flaws That Bothered Me — For Example, Some Needed Tools, Other Required Hardware Like Real Screws. However, The Most Significant Weakness Was The Design Of The Mounting Mechanics For The Frame Assembly. There Was Always That Tight Fit, And The Force One Needed To Clamp The Arms Onto The Frame. So I Designed Mark 1 Of The Arm Which You Can Still See On Most Of The Pictures And Download As A Legacy Zip Archive. I Was Surprised By The Success Of My Design Throughout The Community. However, This Supported My Bad Opinion Of The Stock Spool Holder Arm. Now There Is The Original Prusa I3 Mk3 Out For Sale Which Has Some Significant Geometrical Changes. My Mark 3 Version Of The Arm Takes Them Into Account And Also Fits Nicely On An Mk2 And Mk2S (Most Probably Even On An Mk2.5, But Mine Is Still Not Delivered). I Hope You Like My Continuous Efforts Of Making This Arm Better. I Read Every Single Comment Coming From You And Try To React As Quickly As Possible. Many Thanks Also To The Incredible Thingiverse Community For Providing A Lot Of Derivates Of My Designs For Other Machines And Purposes. I Also Have A Side Project Where I Release Arms For Other Machines As Well. These Arm Derivates Are Not Tested By Me, Because I Don'T Own All Of These Printers. The Process Is That You Send Me Your Request For Such An Arm Derivate And The Measurements Of Your Machines Frame And I Try To Provide You The Best Experience. You Can Find These Arms Here: Https://Www.Thingiverse.Com/Thing:2356183 *** Please Also Take A Look At My Other Designs, Printer Parts, And Tools. If You Like To Support Me And My Work, Please Consider Following Me On: * Thingiverse * [Martinmajewski.Net](Https://Www.Martinmajewski.Net) * [Twitter](Https://Twitter.Com/Mmajewskinet) * [Instagram](Https://Www.Instagram.Com/Martinjmajewski/) * [Youtube](Https://Goo.Gl/Qjtqkv) Sending A Tip Over Thingiverse Is Much Appreciated And Will Provide Me With Coffee To Stay Productive. Please Also Consider Buying Your Next Gear Via One Of The Affiliate Links Found Inside My Thingiverse Project Pages Or Directly Over The Following Links. - [Amazon.De](Https://Www.Amazon.De/Ref=As_Li_Ss_Tl?Ie=Utf8&Linkcode=Sl2&Tag=Thingiverse03-21&Linkid=5Dcc5F8F4162221Bd0A479687Ca9B6C5) - [Amazon.Co.Uk](Https://Www.Amazon.De/Ref=As_Li_Ss_Tl?Ie=Utf8&Linkcode=Sl2&Tag=Thingiverse03-21&Linkid=5Dcc5F8F4162221Bd0A479687Ca9B6C5) - [Ebay Germany](Https://Rover.Ebay.Com/Rover/1/707-53477-19255-0/1?Mpre=Https%3A%2F%2Fwww.Ebay.De%2F&Campid=5337986926&Toolid=20008) - [Gearbest.Com](Https://Www.Gearbest.Com?Lkid=13789568) *** Thank You Very Much And Happy Printing!<Br> Martin

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