Office Hours - Jonathan's Office - Thursdays 11am (Pacific Time)

Jonathan Lampel

Hey all, I'll be starting my Discord Office Hours next Thursday (April 13th) at 11am Pacific Time. That translates to:

  • 2pm New York time
  • 7pm London time
  • 10pm Dubai time
  • 4am Sydney time

It's hard to pick a time that works for everyone, but I'll also record the session for anyone that can't make it live.

Have a question for me? Post it below! 

Active CG Cookie members get first priority, but we're happy to help out anyone. For more information about Office Hours, check out Amber's recent blog post: 

  • Worth it!
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  • Onur Nidayi(fhyio123) replied

    Exciting Stuff ! I have a question, is there a checklist that you go through or a series of steps that you usually follow when creating work for clients ? What is the first thing you do when starting a project? How important is reference in your workflow? Thank you, Onur

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    4 loves
  • Martin Aversa(cgtin) replied
    Hey Jon, I'd like a quick tip on modelling, when should you use the same object with extrusions/insets/etc vs when should you just add another object? For example, if you have a game controller, should the buttons be part of the same object? Does it depend on if it will be animated? When can you have n-gons without worries? I love quads but they are hard :)
  • Thibault Caradec(otowa) replied


    I'm currently working and experimenting with Freestyle option, but I find the settings and options quite confusing.

    My biggest problem these days, is that when mesh geometry is dense, it results in the appearance of ugly big black clumps (see attached).

    Is there a way to tell Blender to avoid tracing too many lines in an area?


    023-04-27 151927.png

  • Martin Bergwerf replied

    As to the 'motor' from the office stream's a fun alternative:


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    2 loves
  • Omar Domenech replied

    Share file Martin, I want to explore and see the topology.

    1 love
  • Martin Bergwerf replied

    Dangs Omar, I didn't Save that file, but it is basically just this with some extra Edgeloops and moving some Verts around:


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    1 love
  • mastart replied

    Hi Jonathan, I wonder if it is possible to make a golf ball with dents of the (exact) same size. If I make a golf ball it always has dents that are slightly smaller. Is there a precise way of getting this done? I use an Ico Sphere with this but never seem to get it straight.... It would be a relief for me to finally get this done the proper way.

    thank you.Golf_Ball.jpg

  • Martin Bergwerf replied

    Hi Martin,

    Great question!

    I am pretty sure, that it is actually impossible to do that.

    Here's a visual of what is happening when you Bevel Vertices in 2 cases:


    A Vertex with n Edges connected to it, will Bevel into an n-gon (3 Edges > triangle, 4 Edges > square, and so forth).

    You'd need to at least start with a spherical Object, that has Vertices with all the same amount of Edges and I think that that is not possible, but I will try and put together a mathematical proof (this has probably been done already, but I'll see if I can do it as well).


    It is definitely possible to have a spherical Object with all vertices having the same amount of Edges...the 2 bottom Spheres already have that...but it just isn't enough.

  • mastart replied

    Thank you Martin,

    I hope there is a way and that you find it. It is a riddle to me that I am trying to solve now for a long time...

  • Martin Bergwerf replied

    Actually Martin, a real golfball doesn't have equally sized dents, far from it:


    and also the spaces between the dents are really very irregular.

  • mastart replied

    oh look at this.... but maybe it is not a real one 😏
    Modeled by someone....

  • Martin Bergwerf replied

    mastart ,

    I looked at many pictures of golf balls, because nowadays you have to be suspicious about whether it's a real photo, a Cg render, or an AI thingy...But all real looking images of golf balls looked like this....

    I even think that a modeler would not think this acceptable as a Render...

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  • Martin Bergwerf replied

    Hey Martin mastart ,

    Just in case I won't be able to make it to the stream:

    Euler has proven a formula for making a (topological) sphere out of regular polygons and this makes it clear, that we cannot cover a sphere with regular hexagons and above hexagons is also impossible due to the angles getting too large...

    In a picture:


    So the best golfball with equal round dents would be based of a dodecahedron and have only 12 dents.

    You could however make a 'sphere' out of not completely regular hexagons and then make dents on all the Vertices (or on all the Faces) by Booleaning small spheres...and the more hexagons you'd use, the closer to regular hexagons they could be.

    You could start like in the image and then duplicating and rotating around a sphere and then Merging By Distance. Maybe there's a better way to construct something like that...

    But, of course, you wouldn't end up with a realistic golfball, like I mentioned above.

  • Martin Bergwerf replied

    Sorry Jonathan for blowing up this thread and sorry Martin, but I got things a bit wrong; Euler's formula is for all (topologicall) spheres, not only those made of regular polygons. So blender's UV Spheres and Icospheres and Suzanne's eyes all conform to that formula. So shifting Vertices around to make a sphere out of irregular hexagons won't beat the formula. (I saw a guy showing a sphere made of only hexagons, which confused me, but he was obviously lying about it; you can't do mathematically impossible things in computer graphics!

    Anyway, long story short, I haven't proven yet that the 'regular dented' golfball is impossible, but I'll get there, either proving it's impossible, or showing that it can be done (and how).

  • sheila5 replied

    I'm having an issue with my pothead file Jonathan. I wasn't aware of it until I started the unwrapping of the head, but I got a cluster of vertices that I can't untangle anymore. I don't know how to unravel the problem. I've uploaded it to drive. The bottoms of the head are hidden so the issue is better visible

    perhaps in your open office hours you can show me how to proceed? Hope I'm in time for it


  • Jonathan Lampel replied

    sheila5 Sure thing! I don't have office hours tomorrow though, so it would be next week. Or Martin or Omar can check it out for you if you're hoping to work on it sooner. 

  • sheila5 replied

    ah thanks @jlampel, also for reminding me that tomorrow is no office hours

  • Omar Domenech replied

    We can hop into a Discord call if you want Sheila, show it to us there.

  • sheila5 replied

    Thanks Omar. I've been working at it this morning and I got it sorted out eventually. Just had to be very patient

  • Omar Domenech replied

    Wow if you unmade that mega mess, then I grant you the CG Cookie Poly Re-Structuring and Maintenance Congressional Medal of Honor. Along with the CG Cookie Watching Cookies Bake Patiently Award. On top of that I hereby declare you Leveled up by winning a boss battle and acquiring new powerful skills and items as loot. You've been on a roll lately Sheila. 

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