CreatBot DX Bed Alignment Jig
Description
This Thing Is Designed To Assist Build Plate Levelling For The Creatbot Dx Printer. It May Or May Not Work For Printers Which Use A Similar Overhead Gantry System Such As The Ultimaker 2 - It Depends Upon The Critical Measurement Of Gantry Components. In Order To Use This Design The User Will Need To Provide 2X Dial Indicators: Https://Www.Amazon.Co.Uk/Gp/Product/B01H035Dro Alternative: Http://Www.Harborfreight.Com/1-Inch-Sae-Metric-Digital-Indicator-93295.Html Note: These Dial Indicators Can Be Ridiculously Expensive. However We Aren'T Interested In Superior Accuracy So The Target Price For A Compatible Indicator Should Be Circa $30 Us. You Also Need 2X M6 Flanged Rivnuts Or 2X M6 Nuts (Depending On Which Stl File You Print - You Don'T Need Both) And 2X M6 X 40Mm Bolts Plus Washers. Optionally, Should You Wish To Couple The Main Jig With Other Components You Will Need A Number Of M3 Flanged Rivuts And M3 Bolts/Washers. The Rivnuts Slide Into Holes Designed Into This Thing. You Can Apparently Modify These Dial Indicators So That Readings Can Be Taken By External Equipment (I Haven'T Tried This): Https://Hackaday.Io/Project/511-Digital-Dial-Indicator-Cnc-Surface-Probe The Basic Principle For This Thing Is To Level The Heated Bed So That It Is Parallel To The Overhead Gantry Axes. I Use The Y Axis Shaft To Mount This Jig This, However As The Y Axis Is Coupled To The X Axis Shaft The Alignment Does Take Into Consideration Both Axes. You Don'T Actually Need The 'Secure' Component Of This Thing - I Have Provided It In Case You Want To Clamp The Thing Onto The Y Axis. Aligning The Heated Build Plate Is Super Easy, And I Find Much More Accurate (And Quicker) Than Moving The Gantry To Each Corner Of The Build Plate And Then Sliding A Piece Of Paper Under The Nozzle. Herewith The Procedure: 1) Set The Nozzle-To-Build-Plate Distance For One Single Point Centrally Placed In The Middle Of The Build Plate. The Actual Physical Position Does Not Need Great Accuracy - It Just Needs To Be Roughly Central. *** Power Down The Printer *** (You Don'T Want The Printer Moving The Gantry System If You Accidentapply Hit The Home Switch - Trust Me, You Probably Will). 2) Install This Jig Onto The Y Shaft. The Two (Rear) Ears Of This Jig Should Slide Alongside The Red Nozzle Component Of The Creatbot Dx, And The Jig Firmly Pushed Against The Red Component. You Could Use Double-Sided Sticky Tape To Hold It In Position - I Didn'T Bother. 3) Move Each Of The Dial Indicators Over The Point Set In Step 1, And Zero Each Dial Indicator. This Defines The Vertical Height Measured By The Dial Indicator - We Need To Set The Build Plate Height To Be The Same Across The Whole Build Plate. 4) Move The Gantry To Centre-Front. The Left And Right Dial Indicators Show The Inclation Of The Left/Right Front Corners Of The Build Plate. Use The Thumbscrews Under The Build Plate To Set Zero On The Respective Indicator. These Adjustments Mean That The Respective Corner Of The Build Plate Is At The Same Height As The Central Point Defined In Step 1. 5) Repeat For The Rear Corners By Sliding The Jig/Gantry To The Rear. You Probably Won'T Set These Corner Heights To Be Exactly Zero - I Found +/- 10 Micrometres To Be Acceptable For Levelling Purposes. This Simple Process Should Result In Your Build Plate Being At The Right Height Across Its Entire Surface. Quick, Easy And Repeatable.
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