not working with blender 2.91 the size in mm is huge i tried as per tutorial for 18 teeth, ended with 8 meters dia

I don't know what cad program is like... But Blender's physic is just still weird Is Cad's physic like that?

- All rotations in this tutorial take place around the center of the wheel (which is also the origin. The involute goes from the base to the tip of the tooth, from UMin to UMax, and Umin is always 0. - For the number of teeth 12 or fewer, there is a need for an "undercut", that is, making the bridge arc go deeper into the wheel to make room for the teeth of the other wheel. The alternative to undercutting is using a non-zero "profile shift", see our Planetary Gear tutorial for more information on profile shifts.

Thank you. Does same principle apply also for inner tooth (planetary gears,...)?

It does.

We have yet to create a rack-and-pinion tutorial.

They do now

Yep this has confused and continues to confuse me. Any help would be appreciated

actually after lots of document deciphering and 45 minutes later I finally get it

45 mins? Yep--sounds about right. Glad you figured it out.

I have the same problem! Have you solved it by any chance?

@@kesniel1714 Me too. In my case, I moved the cursor position to a little bit minus z side, and it worked well.

@@bubudge8855 Thanks! I'll try that out c:

Increase the size of the circle until it stops.

S, X, -1 (to mirror alongside the X axis)

Yes, base radius.

It would be easier for us to help you over email. Please email us at help at o t v i n t a dot com.

First of all you should use the auto-generated python script that the other calculator creates, mentioned in the video description. I just did this today and it works, but you have to change a few lines in the script for 2.8. The lines under the comment "# Link object to scene and make active" are deprecated in 2.8 and only work for 2.7 or less. # Link object to scene and make active scn = bpy.context.scene scn.objects.link(ob) scn.objects.active = ob ob.select = True Change the 4 lines of code to this... view_layer = bpy.context.view_layer view_layer.active_layer_collection.collection.objects.link(ob) view_layer.objects.active = ob ob.select_set(state = True) The script will create the profiles for both gears so you don't have to model that part. Watch the video in the description.

@@aliensoup2420 Great, thanks for the info! I will give that a try.

Please contact us via email, we will send you the entire transcript of the video.

In Editor Type under Graph Editor you will see Drivers has its own separate window

@@MrLzender thanks will check it

It is simply the name of the parameter in a parametric equation. Traditionally the letter t used for a 2D curve, and (u, v) are used for a 3D surface. But in our case, v is not used.

You setup the 3rd gear the same way as you setup the 2nd, via a driver relative to the 1st gear, but you need to adjust the gear ratio accordingly, without a "-" sign because the 3rd and 1st gears are rotating in the same direction, and the gear ratio value needs to be based on all three tooth numbers.

shift + D then S then CRTL M then -1 (Not edit mod)

Try this one: kzfaq.info/get/bejne/nplnisqo0NG4dps.html

Blender

@@OTVinta3d Got it, cool

In Blender 2.8+ make sure in edit mode to select the entire gear, Mesh > Recalculate Outside/Recalculate Inside. I got caught out with the bevel issue, doing that fixes it.

There is.

@@OTVinta3d found it thank you! These are a great resource.