Black Widow Z-Axis G2T Belt Relocation by ShadowWeaver2067

Last crawled date: 3 years ago

Black Widow Z-Axis G2T Belt Relocation
This Mod was designed to increase the Height of the Black Widow Printer by incorporating printed corner blocks to change the location of the z axis belt from below the top cross beam to above the top cross beam. I have included a few add on’s that are not needed for the mod but do make the printer look better and protects the new belt location.
Unfortunately, this mod does require some extra screws and t-nuts. Listed below are parts that are recommended to purchase or obtain before beginning.
1 M4 x 8mm Hex Cap Screws QTY=70 ( Can be bought on Amazon or Ebay or any hardware source that supplies metric screws)
2 M4 drop in T-Nuts QTY=70 ( Can be bought on Amazon or Ebay or any hardware source that supplies metric screws)
3 M5 x 30 Hex Flat Head Screws QTY=16 ( Can be bought on Amazon or Ebay or any hardware source that supplies metric screws) Used with Top and Bottom Z-Axis Caps
4 M3 x 45mm Hex Cap Screws QTY=4 ( Can be bought on Amazon or Ebay or any hardware source that supplies metric screws) Mine were obtained from OpenBuilds Parts Store. Used with z-Axis Motor Mount.
5 8mm ID Lock Collar with grub screw QTY=2 Purchased from Open Builds Parts Store.
Optional Parts: While the printed Upper top cap has a location for a 16OD x 8mmID bearing it can be used or left off and just use the existing 4 that came with the Black Widow.
Parts you need to Print:
SWD_Bottom_Plate Qty=2
Install at bottom of each Z-Axis C-Channel
(Each=Uses 8-M4 Screws & T-nuts Also Uses 4-M5x30 hex Flat Head Screw)
SWD_Top_Plate_Frame_Mount Qty=2
Install at top of each Z-Axis C-Channel
(Each=Uses 1-M5 x 30mm Hex Flat Head Screws)
SWD_Top_Plate_Frame_Mount Cover Qty=2
Install at the top of the Top Plate Frame Mount
(Each=Uses 3-M5 x 30mm Hex Flat Head Screws)
SWD_Center_Base_Corner QTY=4
Install in the 4 corners where the Y Axis and X Axis Join
(Each=Uses 2-M4 Screws & T-nuts)
SWD_Leg_Base Qty=8
Install 2 on each section of the Y/X legs
(Each=Uses 2-M4 Screws & T-nuts)
SWD_Corner_Brace_Large Qty=8
Install 2 per each corner of the Z-Axis Frame
(Each=Uses 2-M4 Screws & T-nuts)
SWD_z-AXIS_MOTOR_MOUNT Qty=1
Install using existing Z-axis Mounting Plate
(Uses 4-M3 x 45mm Screws)
Please note all the frame brackets are designed to overlap the existing BW metal L-Brackets. They are used as a secondary lock down for the existing brackets.
Secondary Add-Ons:
Belt Shield Covers-Snap fit.
SWD_Top_Belt_Shield_Center Qty=1
SWD_Top_Belt_Shield_Left Qty=1
SWD_Top_Belt_Shield_Motor Qty=1
Spool Holder and Spool Rods
SWD_Spool_Holder_Tower Qty=2
(Each=Uses 2-M4 Screws & T-nuts)
SWD_Spool_Holder_Rod101 Qty=1
SWD_Spool_Holder_Rod121 Qty=1
Please note I distribute these freely but request that you do not Sell or Profit from these files as they were created from scratch by me. Also I ask that if you make and appreciate these files for your Black Widow Printer that you post your make as I would love to see what others have done with their machines.
Additional Notes:
To make this mod fully functional 3 additional things are required.
1 BL-Touch Leveling Sensor installed.
With the BL Touch installed you can remove the springs from your bed screws and replace with m-3 lock nuts. By doing so you can reduce the height of your heated bed to ½” or 13mm above the y axis gantry. This will gain 15mm of z height.
2 http://www.thingiverse.com/thing:1777681 Install the horizontal drag chain Mod from the thingiverse link.
This will gain 18mm Z-Height.
(note the top brackets move the top brace rail up 17mm and moving the GT2 Belt above the top Brace gains an additional 20mm. Total change in Height from stock-17+20+18+15=70mm)
3 reflash firmware to adjust total z-height from existing setting to 320mm (Note as you level your bed after level you can set this higher and manually move your z up until it maxes out by stopping on the corner blocks. At that point revise and adjust your max z-height to 2mm less than where your upper most z stopped.)
Be Warned first I am publishing this in good faith that those that download this have the skills to install and assemble this mod. I take no responsibility if your machine is damaged and is solicited as a use at your own risk statement.
Update 2-May-2017 The top cap does not align well with the rest of the z-axis lead screw. Please do not use a 3rd bearing in the top cap let the top of the lead screw turn free without a bearing. I will update this soon but currently the easy fix is to not use a bearing and just use the cap to support the belt shield.
As a Final Note Good Luck and hope the build goes well for you.
If you like this mod please "LIKE" as this puts it close to the top of the search to make it easier for your friends to find.
Sincerely, Shadowweaver2067
AKA Anthony Harmon