Question on Tech Tip: Buidling a Sprocket

richard_alexander

If there is a better place to ask beginner questions, please let me know. I'm working on the sprocket and have made it through to 7:55 on the video where you extrude the build to make the gear part of the sprocket. When I extrude, the preview is in red (reddish brown?). I click on the check mark to complete the extrude and nothing happens. Everything looks right otherwise. All I can figure is that maybe I made an error in the layout, but the repeat pattern function for the sprocket worked and is a continuous line. I constrained the center of the pattern to the origin as instructed. Any idea what I might be doing wrong?  

andrew_troup

If you hover over the red title of the Extrude edit dialog, a tip will come up telling you why the Extrude is failing 

andrew_troup

If you hover over the red title of the Extrude edit dialog, a tip will come up telling you why the Extrude is failing 

Darren_A_Henry

Hi @richard_alexander

I made the tutorial.  Share your document with me and I can take a look.  dhenry@onshape.com.  

Thanks
Darren

richard_alexander

Thanks for your responses.  It's odd how I got past the problem. After reading Andrew's comment, I logged in on my iPad to look at the part. The error stated it was a problem with the boolean computation.  I redid the extrude command and it worked! Nothing else was changed. I later returned to my desktop and supressed the extrude to try it again to see if the error came back up. The extrude worked fine this time.  

Darren, I'll go ahead and share it with you in case you want to take a look at it. (I haven't done the clean-up yet.)  Thanks again for the help. 

Darren_A_Henry

Hi.  the model looks great, but you need to make the pitch diameter circle construction geometry in your sketch.  
  Anyway - Glad you tried the tutorial.  Love how we could work on the same model with no copies.  

Darren