Mini hyenas

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Small drive gear for geared stepper motors, for 3D printers.
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Laszlo Krekacs
Technology
Budapest
Hungary
1 Team Member

IMPORTANT:

For tracking success/failure or simply share your experiment with your mini hyena I intend to create some form of communication channel. What do you guys think, which one suit us the best?:

  • mailing list (google groups)
  • forum
  • facebook :)
  • >insert your idea here<

Just put in the comments what you prefer!

 

Short Summary

This is a drive gear mainly for pushing filament in a 3D printer which works from a spool of filament, like reprap, makerbot, ultimaker and many others.

About me

I've been in DIY 3D printing for a long time, I started around 2007 with a water pipe based machine, then it followed a Rapman and after a Reprap Mendel. Now I have an aluminium profile based machine which resembles a MendelMax printer.

Once the machine worked properly mechanically, I was struck by the lack of reliable hotend, so I've been developing hotends and related gears since then.

This drive gear is yet another step forward. Maybe it seems like a small step, but could turn out to be a big leap forward for the 3D printer enthusiasts!

 

Outline of manufacturing

All of the price at the left is basically calculated of manufacturing 100 mini hyenas in mind at costs. Once this campaign is over, the hyenas will be available on my webstore at a slightly higher price.

History

  1. Hobbed bolts

 Hobbed bolt

All started with lack of reliable hobbed bolt manufacturing. I never could make the failure rate less then 20%.

  2. Hyena, the new generation

To solve this issue, I started to work on bar with sharp teeth, where each tooth cut invidually.

I named it hyena because hyenas have the strongest jaw of all mammals.

Bar with sharp teeth

 

  3. New family members: Mini hyenas

This is what this campaign is about. To have a full range of drive gears:

Full range of family

 

We can produce the hobbing to fit 5mm or 8mm shafts.

Installation

Just put onto a motor's shaft of 5 or 8mm. Here is an example:

Mini hyena on motor shaft

The drive gear will come with an M3 grubscrew. On the above photo there is an M3x3 grubscrew, but we will ship M3x4 because it looks better.

Shipping fee

Its 1.5USD for everyone, everywhere.

(Once you get a confirmation email, its ready to ship, you are asked to send another 1.5USD in plus of your donation/contribution. If I started the campaign now, I would list the perks 13.5USD (with free shipping) instead 12USD (without shipping) to avoid confusion.)

Drawings

You want to adjust your machine in advance? Or just curious? Here we go:

Drawings of the mini hyena family

Compatible planetary stepper motors

Be warned, it may work or may not work (ie. untested). But these are our best bets:

  • Kysan 42BYGH243-14 (8mm shaft)
  • Phidgets Inc. 42BYGH40(M)-160-4A (8mm shaft)
  • PG35L-D48 (5mm shaft)
  • High torque nema17 stepper motor (may be not working!)

Update:

The new 8x5 mini hyena prototype is ready!

mini hyena 8x5

 

Other Ways You Can Help

  • Just spread the word.

 

Find This Campaign On
$1,922USD
raised by 95 people in 20 days
192% funded
0 time left
$1,000 USD goal
Fixed Funding This campaign has ended and will receive all funds raised.
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Select a Perk
  • $1USD
    Thanks

    The Web: You'll receive our sincere gratitude, and also you will be listed in a big THANK YOU post at http://blog.arcol.hu.

    1 out of 1000 claimed
    Estimated delivery: May 2012
  • $12USD
    Mini hyena 13x8

    You will get one 13x8mm mini hyena. 13mm outside diameter and 8mm inside diameter.

    10 out of 100 claimed
    Estimated delivery: May 2012
  • $12USD
    Mini hyena 11x8

    You will get one 11x8mm mini hyena. 11mm outside diameter and 8mm inside diameter.

    13 out of 100 claimed
    Estimated delivery: May 2012
  • $12USD
    Mini hyena 11x5

    You will get one 11x5mm mini hyena. 11mm outside diameter and 5mm inside diameter.

    27 out of 100 claimed
    Estimated delivery: May 2012
  • $12USD
    Mini hyena 8x5

    You will get one 8x5mm mini hyena. 8mm outside diameter and 5mm inside diameter.

    31 out of 100 claimed
    Estimated delivery: May 2012
  • $44USD
    Magic bundle

    One from each mini hyena.

    8 out of 100 claimed
    Estimated delivery: May 2012
  • $120USD
    Mega bundle 8x5

    You get a pack of 10 8x5 mini hyena along with one piece from each other size: 10x 8_5 1x 11_5 1x 11_8 1x 13_8

    0 out of 10 claimed
    Estimated delivery: May 2012
  • $120USD
    Mega bundle 11x5

    You get a pack of 10 11x5 mini hyena along with one piece from each other size: 1x 8_5 10x 11_5 1x 11_8 1x 13_8

    0 out of 10 claimed
    Estimated delivery: May 2012
  • $120USD
    Mega bundle 11x8

    You get a pack of 10 11x8 mini hyena along with one piece from each other size: 1x 8_5 1x 11_5 10x 11_8 1x 13_8

    0 out of 10 claimed
    Estimated delivery: May 2012
  • $120USD
    Mega bundle 13x8

    You get a pack of 10 13x8 mini hyena along with one piece from each other size: 1x 8_5 1x 11_5 1x 11_8 10x 13_8

    1 out of 10 claimed
    Estimated delivery: May 2012
  • $121USD
    Magic mega bundle

    First I send a package of all four variants, you choose the right one for you, and I send a SECOND package with 9 more mini hyenas. So 13 in total, splitted into two shipments.

    3 out of 10 claimed
    Estimated delivery: May 2012
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