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Millennium MINIMILL V1.5 Assembly Manual
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Millennium MINIMILL V1.5 Assembly Manual

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MINIMILL V1.5
ASSEMBLY MANUAL
Made in a shed somewhere ... Probably

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Summary of Contents for Millennium MINIMILL V1.5

  • Page 1 MINIMILL V1.5 ASSEMBLY MANUAL Made in a shed somewhere … Probably...
  • Page 2 Acknowledgements Whilst the work that has been put in to this project by the millennium designs team is immense we can’t take all the credit for the project as a whole, we had a lot of help along the way and would like to take a moment to recognise a few of the entities outside of the team that helped us make this all a reality.
  • Page 3 If there is anything, and we mean anything that you are curious or unsure about you are more than welcome to ask us on our discord channel After all, you are special to us and we don’t want you to get hurt due to a lack of knowledge. Most importantly from everyone at the Millennium design team, Have fun building your very first milo.
  • Page 4 Introduction Bill of materials Provided Here is the bill of materials. Whilst we recommend that you try stick to this list as much as possible you're an adult (hopefully) and this is your machine. If there is a substitution that you think would lead to a better machine then do that, if there is a feature you don’t feel that is necessary don’t buy the parts for it.
  • Page 5 Introduction Parts list and printing guidelines The millennium team has provided a printing list with settings for you as a guideline for printing the parts necessary for the build. This list can be found Here. Inside you’ll find details on some of the print settings that will give you the best mechanical properties suited for each individual part.
  • Page 6 Introduction Drilling out holes To make some features printable without support some holes are printed with a sacrificial thin floor. These parts will need to be drilled and or cut out before use. Part versions Some printed parts have multiple versions in order to cater for different machine setups, be aware that not all versions need to be printed to put your machine together.
  • Page 7 Introduction T-Nuts application This machine requires an immense amount of T-nuts. In the interest of simplifying the instructions of this manual, we have chosen to omit the installation of T-nuts. Wherever a part interfaces with an extrusion in a way that looks like it requires a T-nut should be considered a part that requires a T-nut.
  • Page 8 Introduction Pre-flight training Before you head out on your journey to create skynet it’s probably a good idea that you learn a few things. Luckily the team over here have put together a curated list of videos to teach you all that you need to know. So sit back, relax and enjoy. ●...
  • Page 9 Do you have a question ? Do you wanna show off your build ? Or maybe do you just want someone to chat with ? Well why not join the community here on : https://discord.gg/TY4mtzhpZY r/MilleniumMachines Millennium Machine Works Official https://github.com/MilleniumMills...

  • Page 10: Hardware Reference

    HARDWARE REFERENCE Socket head cap bolt (SHCS) Button head cap bolt (BHCS) Metric fastener with a dome shaped Metric fastener with a dome shaped head head and hex drive. Most commonly and hex drive. Most commonly found in found in locations where a fastener makes locations where a fastener makes contact directly with either a metal part or contact directly with a printed part.
  • Page 11 HARDWARE REFERENCE F608ZZ bearing 608ZZ bearing A ball bearing with a flange used to hold A ball bearing used to hold leadscrews in leadscrews in place. place. Washer Locking collar Usually stamped from sheet metal this type of Steel or aluminium loops with a grub screw in the spacer distributes load over a larger area.
  • Page 12 HARDWARE REFERENCE Spring T-nut 40 tooth GT2 pulley Nut that can be inserted into the slot of Used to drive the Z axis leadscrew. an aluminium profile. Used in both M3 and M5 variants throughout this guide. 20 tooth GT2 pulley Brass leadscrew nut Attached to the z axis motor used to drive the Z Used to translate rotational motion of a...
  • Page 13 This page is intentionally left blank.

  • Page 14: Axis Assembly

    X Axis Assembly...
  • Page 15 X Axis Assembly Disclaimer : part inconsistencies The Y axis motor mount has gone through a big update to make it stronger and easier to work with unfortunately it means that a vast section of the manual will need to reworked to show off this change, in the meantime we want to make sure that you can continue on with your Milo builds so you may see both the old and new Y motor mounts appear in this manual at various stages.

  • Page 16: Y Axis Assembly

    Y Axis Assembly XY plate orientation The XY gantry plate is not an exact mirrored part and therefore needs to be oriented in the right directions in order for it to be installed correctly. To make sure that the plate is installed the right way round rotate the plate until counterbores “a”...
  • Page 17 Y Axis Assembly M3x5mm SHCS Protect your rail carriages Rail carriages should always have a rail or dummy rail installed in them to avoid getting them damaged. If your rails didn’t come with dummy rails then print the ones we provided for you in the print list.
  • Page 18 Y Axis Assembly M3 Heat Insert...
  • Page 19 Y Axis Assembly M3 washer M3x20mm SHCS...
  • Page 20 Y Axis Assembly M5 Heat Insert M3x8mm SHCS Brass leadscrew M3 Heat Insert...
  • Page 21 Y Axis Assembly M5 Heat Insert M3x8mm SHCS Brass leadscrew M3 Heat Insert...
  • Page 22 Y Axis Assembly M5x16mm BHCS...
  • Page 23 Y Axis Assembly M5x16mm BHCS...
  • Page 24 Y Axis Assembly ANTI-BACKLASH PRELOAD TUNING Each axis uses anti-backlash* blocks in order to compensate for changes in screw direction during operation. They do this by driving 2 brass TR8x8 lead screw nuts towards each other to engage both sides of the lead screws threads. In order for this to work the preload required to drive each nut needs to be tuned by hand.
  • Page 25 Y Axis Assembly M5 Heat Insert M2.5 Heat Insert...
  • Page 26 Y Axis Assembly F608ZZ bearing 608ZZ Bearing...
  • Page 27 Y Axis Assembly M5x12mm BHCS C-Beam 470mm Temporarily install the Y Bearing block The Y bearing block is used as a stop to M5x12mm BHCS install the Y rails, it will then be removed later so there is no need to loctite it at this point.
  • Page 28 Y Axis Assembly MGN15 350mm Rails T-nut installation Spring T-nuts are used here to mount the rails but are not shown, install these prior to the screwing the bolts in. M3x10mm SHCS Rail centering Guide Use the MGN15 guides to position the rail in the center of the extrusion prior to fastening Front the screws.
  • Page 29 Y Axis Assembly Uninstall the Y Bearing block The Y bearing block needs to be uninstalled before being able to install the the XY carriage.
  • Page 30 Y Axis Assembly Take care when installing Carriages onto rails Improper handling of carriages can damage them the best way to install a dummy rail in the carriages and then transfer onto the steel rails.
  • Page 31 Y Axis Assembly M5x12mm BHCS Install the Y bearing block for the final time This will be the final installation of the Y bearing block be sure to use loctite.
  • Page 32 Y Axis Assembly 8 to 6.35mm rigid coupler 550mm leadscrew...
  • Page 33 Y Axis Assembly Install the Y screw, coupler and motor From the back of the Y axis insert the Y screw assembly, be sure to thread through the Y anti-backlash nut. However do not insert it through the bearing block yet.
  • Page 34 Y Axis Assembly Install Locking collar on leadscrew Before pushing the leadscrew through the bearing block don’t forget to add a locking collar to the inside bearing face. Leave this loose.
  • Page 35 Y Axis Assembly M5x30 SHCS...
  • Page 36 Y Axis Assembly Install Locking collar on leadscrew Add the last locking collar on the operator side of the bearing block. Do not tighten the set screw yet.
  • Page 37 Y Axis Assembly Locking collar preload Using your fingers press each locking collar towards each other, driving them into the face of each bearing with moderate to high pressure. Tighten the operator side collar first before tightening the internal side collar this will ensure that the screw remains in the same position during use.
  • Page 38 Y Axis Assembly Y Endstop installation process To avoid the endstop getting damaged during the rest of the assembly its a good idea not to install it at this point, but rather install it when you do you’re wiring.
  • Page 39 Y Axis Assembly M3 Heat Insert M5x12mm BHCS...
  • Page 40 Y Axis Assembly Drag chain orientation Drag chains have 2 different sides a fixed side and a free side for this setup the free side is connected to the rear drag chain mount shown on the last page. The fixed side attaches itself under the XY transition piece M3x6mm FHCS...
  • Page 41 Y Axis Assembly Cable tie points It’s a good time to mention that the Cable chain optional installation little cutouts that you may have point noticed scattered around the build are for your zip ties, use these to You may wish to install the rest of secure your cables down where the cable chain now to complete the necessary.

  • Page 42: Axis Assembly

    X Axis Assembly...
  • Page 43 X Axis Assembly M3x10mm SHCS MGN15 500mm Rails C-beam 500mm...
  • Page 44 X Axis Assembly F608ZZ bearing M5 Heat Insert M2.5 Heat Insert M3 Heat Insert 608ZZ bearing...
  • Page 45 X Axis Assembly M5x12mm BHCS...
  • Page 46 X Axis Assembly 2080 500mm M5x12mm BHCS...
  • Page 47 X Axis Assembly M5x12mm BHCS...
  • Page 48 X Axis Assembly M5x8mm BHCS...
  • Page 49 X Axis Assembly...
  • Page 50 X Axis Assembly 8 to 6.35mm rigid coupler 550mm leadscrew...
  • Page 51 X Axis Assembly...
  • Page 52 X Axis Assembly M5x20mm SHCS...
  • Page 53 X Axis Assembly Install Locking collar on leadscrew Install both locking collars onto the leadscrew without tightening either locking collars.
  • Page 54 X Axis Assembly M5x12mm BHCS...
  • Page 55 X Axis Assembly Locking collar preload Using your fingers press each locking collar towards each other, driving them into the face of each bearing with moderate to high pressure. Tighten the inner collar first before tightening the external side collar this will ensure that the screw remains in the same position during use.
  • Page 56 X Axis Assembly Drag chain orientation Drag chains have 2 different sides a fixed side and a free side, for this setup the fixed side is connected to XY drag chain transition. The free side attaches itself to the X motor Mount.
  • Page 57 X Axis Assembly Cable chain optional installation point You may wish to install the rest of the cable chain now to complete the X axis, however , it is often easier to thread your X axis motor and X endstop cables through the loose chain before installing it otherwise it can become quite a tight space to work in later.
  • Page 58 X Axis Assembly X Endstop installation process To avoid the endstop getting damaged during the rest of the assembly its a good idea not to install it at this point, but rather install it when you do you’re wiring.

  • Page 59: Z Axis Assembly

    Z Axis Assembly...
  • Page 60 Z Axis Assembly Identifying extrusions This section of the build contains a few C-beams that are close together, to help you identify which parts are which lay out your extrusions like the diagram shown on this page, the next steps will then highlight which extrusions are used for each step.
  • Page 61 Z Axis Assembly 67mm M5x12mm BHCS...
  • Page 62 Z Axis Assembly M5x12mm BHCS...
  • Page 63 Z Axis Assembly 18mm M5x12mm BHCS...
  • Page 64 Z Axis Assembly Install the mirrored column plates At this point it is best to install the column plates on the other side of the column. 608ZZ bearing M5x12mm BHCS...
  • Page 65 Z Axis Assembly Ballast box The ballast box is designed to house a damping load such as sand or epoxy granite. It is not a requirement but is recommended. Install at an angle There is a small lip in the ballast box which registers with the tongue on the ballast top.
  • Page 66 Z Axis Assembly M5 Heat Insert M3x8mm SHCS Brass leadscrew M3 Heat Insert...
  • Page 67 Z Axis Assembly 13 mm...
  • Page 68 Z Axis Assembly...
  • Page 69 Z Axis Assembly M5x16mm BHCS...
  • Page 70 Z Axis Assembly M3x5mm SHCS...
  • Page 71 Z Axis Assembly 608ZZ bearing M2.5 Heat Insert 608ZZ bearing...
  • Page 72 Z Axis Assembly M5x12mm BHCS...
  • Page 73 Z Axis Assembly Install the motor at an angle When installing the Z motor first attach your belt loosely around your leadscrew pulley then slide your Z motor in at an angle.
  • Page 74 Z Axis Assembly M5 Nyloc Hex Nut M5 washer Belt tension Before tightening fasteners fully make sure the tension is set correctly, to do this pull the motor away from the column with one hand until the belt can be strummed like a guitar string then tighten fasteners in opposing corners first.
  • Page 75 Z Axis Assembly M5x12mm BHCS M5x12mm BHCS...
  • Page 76 Z Axis Assembly M5x12mm BHCS M3 Heat Insert...
  • Page 77 Z Axis Assembly M5x12mm BHCS M5x12mm BHCS...
  • Page 78 Z Axis Assembly M5 washer M5x100mm SHCS...
  • Page 79 Z Axis Assembly M5 Heat Insert...
  • Page 80 Z Axis Assembly Install spindle holder It has come time to install your spindle mount however do not install your spindle at this point...
  • Page 81 Z Axis Assembly Do not tighten Leave these M5 nuts loose until it comes time to install your spindle. M5 washer M5 Nyloc Hex Nut...
  • Page 82 Z Axis Assembly Optional: logo insert If you wish at this point you can glue in your Millenium Logo...
  • Page 83 Z Axis Assembly M3 Heat Insert M5x12mm BHCS...
  • Page 84 Z Axis Assembly M3x6 FHCS...
  • Page 85 Z Axis Assembly...
  • Page 86 Handwheels M5 Heat Insert M3 Heat Insert...
  • Page 87 Handwheels M5x25mm SHCS...
  • Page 88 Handwheels M3X10 Grub screws To attach your handwheels slide your handwheel assemblies over your lead screws and secure using 2 M3x10mm grub screws on the back side of the assembly (not shown here)
  • Page 89 Table Assembly...
  • Page 90 Table Assembly M5x12mm BHCS...
  • Page 91 Table Assembly M5x12mm BHCS...
  • Page 92 Table Assembly...
  • Page 93 Table Assembly M5 Heat Insert...
  • Page 94 Table Assembly M5x12mm BHCS...
  • Page 95 Table Assembly M5x30mm BHCS...
  • Page 96 Table Assembly M5x8mm BHCS...
  • Page 97 Completion Spindle installation It is now safe to install your spindle in its mount. To do this, lower the Z axis all the way to the table by hand and slip the spindle into its mount. Adjust the height of the Z axis until your spindle sits at an appropriate height in the mount and tighten all the nuts on the back of the Z axis plate.