Tantillus

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Tantillus

Release status: working

Microbot.jpg
Description
The portable self replicating mini printer
License
Author
Contributors
Based-on
Categories
CAD Models
External Link

Tantillus

Introducing Tantillus. The portable self replicating compact printer.

Status

May 27, 2012

  • Printed case files have been available for a couple of months on GIThub
  • Case source added to GIThub May 24, 2012
  • Blog entry about the cable drive.
  • Blog entry about print quality.
  • Created Thingiverse page for Tantillus.
  • Case has been successfully printed in ABS by Nophead (ABS version). See below for details.
  • Created RepRap forums Sub-forum for Tantillus.


May 16, 2012


Mar 28, 2012

  • Beta 0.1 printed in ABS was unsuccessful due to ABS warping. A special version was designed with openings to relieve stress but it too was prone to warping and cracking in ABS.
    • All parts are successful in PLA and have passed many hours of printing.
  • Alpha 1.0 of laser cut version complete.
    • Multiple copies of Laser cut Beta 0.1 being assembled for testing.
  • Public release estimated for End of April


Feb 27, 2012

Feb 9, 2012

  • Alpha unit assembled and ready for testing.

Design goals

   √  Portable.
   √  Commonly available parts and materials.
   √  Self replicating.
   √  Compact.
   √  Autonomous printing.
   √  Printable frame. (Printable version only)
   ≈  Custom interface shield. (Currently hardwired)
   ≈  Larger version of laser cut model. (Tantillus Plus)
   ≈  Belt upgrades. (For those of you who just have to have belts)
   ∅  High speed copper hotend.
   ∅  Expandable. (Printable frame only)
   ∅  Daisy chainable. (Two machines running off the same electronics)
   ∅  Dual extrusion for expanded frame and Tantillus Plus.
         √ Complete | ≈ Current Development | ∅ Future Development


Specifications

Outer dimensions: Printed version

  • 225mm x 225mm x 300mm

Laser cut version

  • 240mm x 240mm x 300mm

Build Area:

  • 100mm x 100mm x 100mm


Features

  • Fully printed case. (retail version uses laser cut case)
  • It can print all of its own parts.
  • Designed to use J-head hotend.
  • Internally mounted extruder with bowden cable.
  • External power supply to allow for battery operated use.
  • Uses an interesting drive train: low cost wire rope (fishing wire) or High test Braided fishing line instead of costly belts (It wraps 5 times around the rod and then goes through a hole and wraps an additional 5 times resulting in no slip). This is a roll on roll off system with a fixed anchor in the middle.
    Tantillus Alpha

Printing the case

Please contribute to this section as you print the case

The Twelve large case parts are designed to be printed on their edges in the orientation provided.

The connectors are NOT in the correct orientation (to do). They need to be rotated to have the recess for the bolt head facing up. If you rotate them please request a GIThub pull or post them as an attachment in the Tantillus Sub-forum.

I would not recommend printing the case with a nozzle larger than 0.5mm it has some thin areas we want to be at least two perimeters thick.

Some warping is acceptable but should be avoided if possible. The top four case parts are the most important to be square and true.

The case stiffeners are designed to pull the center seams of the top of the case outwards to prevent the nuts catching on the XY ends. The nuts that hold them must be thin (my #10 nuts are 3.3mm thick). Use washers behind the stiffener to adjust the amount of force being applied to the case and use washers on the bolts that hold them on to adjust the length of the bolt to prevent it from sticking through the inside to far and contacting the XY ends.

Exploded view

Click to see full size image.

Tantillus Front right X.png Tantillus Left front X.png Tantillus Rear left X.png Tantillus Right rear.png

PLA case

All attempts at printing the case in PLA have been successful with the exception of machine failures. See the Tantillus sub-forum to see the builds in progress.

ABS case

Special ABS version is hard to print but possible as Nophead has proven here. He managed to print Base1 and Base2 normal in ABS by rotating them on their backs, it did make the round corners harder to print but was successful. The Rest of the parts are the ABS versions. They too are a little difficult to print because I made the cutouts rounded on the tops. The Source for the ABS case is in the GIThub repo and the shapes of the cutouts can be changed with relative ease (if you are familiar with blender).

ABS case by Nophead

Printed parts

   (All versions)
       1   -   Carriage top
       1   -   Carriage bottom
       1   -   Bowden clamp
       2   -   XY end (left)
       2   -   XY end (right)
       1   -   Z upper bracket
       1   -   Z lower bracket
       1   -   Z motor mount
       1   -   Z lift bracket
       1   -   Z coupler (set)
       1   -   Z arm (left)
       1   -   Z arm (right)
       1   -   Extruder body
       1   -   Extruder motor mount
       1   -   Extruder idler
       1   -   Extruder large gear
       1   -   Extruder small gear
       2   -   Axis drive gears
       2   -   Motor gears
       2   -   Fan mounts
       1   -   Encoder knob
   (Additional for Laser cut version)
       1   -   Top 1 corner connector
       1   -   Top 2 corner connector
       1   -   Top 3 corner connector
       1   -   Top 4 corner connector
       4   -   Bottom corner connectors
   (Additional for Printed version)
       1   -   Case top 1
       1   -   Case top 2
       1   -   Case top 3
       1   -   Case top 4
       1   -   Case middle 1
       1   -   Case middle 2
       1   -   Case middle 3
       1   -   Case middle 4
       1   -   Case bottom 1
       1   -   Case bottom 2
       1   -   Case bottom 3
       1   -   Case bottom 4
       1   -   Top front connector
       2   -   Top side connectors
       1   -   Rear lower connector
       1   -   Rear upper connector
       3   -   Middle connectors
       3   -   Base connectors
       1   -   Motor mount reinforcement
       4   -   Upper stiffeners


Vitamins

Bolts / Nuts

   (All versions)
       16   -   10-32  x  3/4" Socket head cap screws
       12     -   8-32  x  1" Socket head cap screws
       5     -   8-32  x  3/4" Socket head cap screws
       4     -   8-32  x  5/8" Socket head cap screws
       8     -   8-32  x  3/8" grub screws
       1     -   6-32  x  2-1/8"" Socket head cap screws
       5     -   6-32  x  1-3/4" Socket head cap screws
       10     -   4-40  x  3/4" Socket head cap screws
       2     -   4-40  x  1/4" grub screws
       16   -   10-32 Hex nuts
       33   -   8-32 Hex nuts
       8     -   6-32 Hex nuts
       16   -   4-40 Hex nuts
       4     -   1/4" Hex nuts
       4     -   5/16" Hex nuts
       38   -   8-32 Flat washers
       3     -   1/4" Flat washers
       15   -   M3  x  10mm Socket head cap screws
       19   -   M3 Flat washers
   (Additional for Printed version)
       10   -   #10-32  x  3/4" Socket head cap screws
       22   -   #10-32  x  1/4" Socket head cap screws
       32   -   #10-32 Hex nuts
       16   -   8-32 Flat washers

Bearings

   (All versions)
       11   -   608 skate bearings
       6     -   LM8uu linear motion bearings (24mm long)
       2     -   LM8suu linear motion bearings (17mm long)
       4     -   Printable LM8uu bushings (24mm long)

Rods

   (Laser cut version)
       2   -   8mm  x  230mm Drill rods
       2   -   8mm  x  170mm Drill rods
       2   -   5/16"  x  230mm Drill rods
       2   -   5/16"  x  210mm Drill rods
       1   -   5/16"  x  22mm Drill rod
       1   -   1/4"  x  175mm Threaded rod
   (Printed version)
       2   -   8mm  x  230mm Drill rods
       2   -   8mm  x  175mm Drill rods
       2   -   5/16"  x  220mm Drill rods
       2   -   5/16"  x  197mm Drill rods
       1   -   5/16"  x  22mm Drill rod
       1   -   1/4"  x  180mm Threaded rod

Miscellaneous

   (All versions)
       1   -   6.5mm i.d.  x  20mm Spring
       4   -   4mm i.d.  x  20mm Springs
       1   -   5/16  x  4" Hobbed bolt
       800mm -   1/4" o.d. x 1/8" i.d. (6mm o.d.  x  3mm i.d.) PTFE tubing (zeus is one of the largest brands)
       8m  -   65lb test braided fishing line (or stainless leader) (spectra braided line)
       18   -   150mm  x  4mm Zip ties (6")
       50mm  -   6mm silicone tubing  x  (aquarium tubing)

Electronics

Recommended electronics

       4   -   Nema 17 stepper motors (max length of 40mm recommended)
       4   -   Stepstick or pololu stepper drivers
       1   -   RAMPS shield
       1   -   Arduino mega 2560
       1   -   16 x 2 LCD panel (optional)
       1   -   20 position encoder (optional)
       1   -   J-head Mk-IV-B
       1   -   90 watt power supply (15v @ 5/6A)
       1   -   SD card break out board or SDramps (optional)
       1   -   Female barrel connector for power supply connection (optional)
       2   -   50mm or 40mm fans


External Links