Arcol blog Just another RepRap weblog

24Aug/13Off

Chrome beauty

Grab one here.

The chrome family:
flickr:8697273067

Here is how the normal arcol.hu mini hyena v2.1 with 8mm bore looks like:
flickr:8694227653

Here is how the arcol.hu mini hyena v2.1 looks chrome plated:
flickr:8698396780

I think the normal hyena looks the most beautiful when chrome plated:
flickr:8683335890

It is really shiny, it is almost like having a brand new bike:)

Here is a comparison photo between the mini hyenas:
flickr:8694228301

19Oct/12Off

Arcol Hyena v1.1

Available at: http://shop.arcol.hu/item/hyena

History (v1.0)

For previous v1.0 announcement, read here:
http://blog.arcol.hu/?p=1920
and here:
http://www.thingiverse.com/thing:22369

V1.1 update

This is a minor, but really handy upgrade to hyena.

At one end it has 6mm flats for wrenches. So no more pliers to holding while putting the big gear onto the shaft.

This is how it should be mounted (flat end is the opposite one from big gear):
flickr:8090962459

Here is a closeup of the two flat sides:
flickr:8091117901

Here is how you should put the big gear onto the hyena:
flickr:8091129897

Also here it is mounted on the extruder pusher:
flickr:8091151235

(Note the M8 nut with M3 grubscrew! It is *really* useful)

Hyena: http://shop.arcol.hu/item/hyena
M8 nut with M3 grubscrew: http://shop.arcol.hu/item/m8nutm3

—-
I closed down the commenting on this webpage due to the enormous number of penis enlargement suggestions.

If you have any thoughts to share about this article, please discuss it on arcol.hu's mailing list,
in this thread.

17Oct/12Off

Arcol.hu spring kit

Available at: http://shop.arcol.hu/item/spring-kit

This is a simple spring kit for the extruder pusher:
flickr:8091226753

Many people have trouble finding the right spring for the job, so
I decided I will offer the exact same springs, that I use on my own machine.
I settled to this spring after trying out more then 20 different springs.

The ideal spring is small, stiff, but not too hard to compress,
so the hobbed bar (hyena) does not bite into the filament instantly.

Also when you change the filament, the bolt is long enough so you do
not need to take it out completely from the extruder pusher.

Curious enough, how it looks mounted?:), here we go:
flickr:8091233070

Go grab one!: http://shop.arcol.hu/item/spring-kit

—-
I closed down the commenting on this webpage due to the enormous number of penis enlargement suggestions.

If you have any thoughts to share about this article, please discuss it on arcol.hu's mailing list,
in this thread.

29Apr/12Off

Hobbed bar, hyena v1.0

This is my take of a new hobbed bolt replacement :)

I call it the hyena, because hyenas have the strongest jaw of all mammals.
All teeth are cut individually:

Here is a comparison photo with one of my hobbed bolts:

The brass one is the new version:)
You mount it with a M8 nylock nut, so the width of your extruder does not matter.

Key advantage over the old version

  • It's machined from straight, round brass stock. Regular bolts often have large tolerances and are not entirely straight. The hyena is guaranteed to be straight.
  • Each tooth is individually machines, so there is no "orphan tooth". An orphan tooth is an incompletely cut tooth that occurs during hobbed bolt production with a tap, because the teeth of the tap do not match the diameter of the bolt while cutting. This is a problems because it's the spot where filament begins to slip. It tends to bite a small piece of plastic off the filament as it does not reach deep enough to grip. The next (normal) tooth continues eating into the filament, resulting a complete filament strip, and no printing. The hyena prevents this by making sure every tooth grips by the same amount.

Installing on a Wade style extruder

Some pictures, from the top:

Also when opened (please note the washers around the bearings!):

(Also take note the really useful and special M8 nut. It will be the subject of an another announcement:)

Im a technical guy, any drawings?

Here it is:

Enough talk, I want one!

10Sep/10Off

Wade’s machined bolt version 1.3

This is only a small update about Wade's machined bolt manufacturing.