@bejant
based on your excellent answer I will wait for sure 18 hours.....
keep in touch
//mafer

bejant.....is simple great work fine Could you explain the trick?is the center origin the problem?

why you have used 48 for y and 93 for z?why you've choice 12°?
could be we sure that the screw are perpendicular to the valleys/splined/grooves?

No, for the post that you've linked I've used a tracepart object and it is related to polar array function, I've downloaded it. I would like to create shaft and hub by myself. Which is the values that create problem?If they are the values marked with "-" you can consider them as positive b...

Do you have need of other information from my side for hub?
What do you mean when mention "screen grabs"?

//mafer

yes this is my problem I would like to put the arrays part inside the valleys/splined/grooves

//mafer

In attachment my test file but I have deleted the Array container because the file size is too big.

I don't know exactly , I cannot put the holes created with the array function where I want at the center of the splide.

//mafer

many thanks for your feedback, I want to cover 360° of my cylinder, sorry in the image is been draft briefly , the problem is focused on the position of holes that not match the position that I want (blue line in my image).

//mafer

No one can help me on this issue?

ok thanks I can study later, could you help me with the hub profile using the file that you've attached in the previous post?

br
Mafer

Hello Experts, I've need to do a polar pattern of one part on Cylinder and/or Ring because my goal is to create a number of holes around my cylinder/ring using the polar function. Could someone help me with a "how to" and/or little bit steps description? Sorry but I follow a lot of tutoria...