Fusion 360 Quick Tips | Serrated Washer Using Loft To A Point |

In this video we are going to take a look at using Loft to a point to create a serration on a boss.

[@bwilliams1815]

Reference through constraints are truly the key. One of the toughest things to adapt to coming to Fusion from Creo is the need to project and intersect to maintain references that will allow these powerful function to work as intended. Thanks again Matt.

[@LearnEverythingAboutDesign]

Thanks brian, there is an option in the user preferences to auto project. So if i started drawing the V shape off the edges it would project them for me. Sometimes it might not bring in what you want though. For example it might just bring in a point and not the horiz line.

[@DadJokesAllDayLong]

The best tutorial on this feature I've been able to find! Thanks!

[@LearnEverythingAboutDesign]

Thanks! I did a follow up video on this talking about the Hirth Joint, which is the basis for making washers that lock together. Be sure to check it out if you are planning on doing more than a simple lofted cut kzbin.info/www/bejne/oJqrhnien8ZsjJI

[@slowstartpokemon8652]

This was a really good video. Simple to follow along

[@LearnEverythingAboutDesign]

Glad to hear it! I did a follow up video on this as people were asking for a true Hirth Joint modeling video. So if you are looking for a be more be sure to check that out.

[@alan5171]

Thank you. I would have no idea where to start with this problem. 👍

[@LearnEverythingAboutDesign]

Glad to help. I did a video after this one on designing a proper Hirth Joint if that is what you are trying to do. kzbin.info/www/bejne/oJqrhnien8ZsjJI

[@alan5171]

Thank you. Will take a look.

[@ghymes1999]

THX

[@LearnEverythingAboutDesign]

If you are making a true HIRTH joint i did a video after this one with all the math needed to make two serrated washers fit together.

[@emanggitulah4319]

Perfect for using formula here. You can drive the angle and geometry by just one parameter

[@LearnEverythingAboutDesign]

Yup that would be a great next step! Have a parameter for the pattern number which drives the angle as 360/pat-num / 2

[@emanggitulah4319]

@@LearnEverythingAboutDesign yes and to pattern features will not break anything.

[@KwongKan]

Didn't follow and create the exact same model by myself for confimation, but, can a proper hirth join created by this method? Just asking :)

[@LearnEverythingAboutDesign]

Yes you can. There are variations to think about. Lofting to a point will create the spline cuts with the appropriate taper radially but they are also tapering upwards. In order to avoid this the taper point would need to be on the lower end of the triangle and then the triangle would need to be extended upwards. Maybe I should do a follow up. One thing about a hirth joint is the fact that there is no backlash between sides. If you use one side to cut the other you will have a perfect fit but ideally you would want one side to stop short maybe by breaking the end point so as you tighten them down you would not have the end of the point contact but the tapered faces for the max torque.

[@LearnEverythingAboutDesign]

Check out the new video. I did one creating an accurate hirth joint using this method.

[@fortifor5410]

Quite a long process in this software. In DSM you just make cylinder draw a line from center to the edge make pattern, finish sketch and pick the lines you want to move up or down and set set it to the required height. Would take a minute. Nevertheless thanks for the video I was looking for. I found another way as well and not sure which is better.

[@LearnEverythingAboutDesign]

You can do it quickly when you don't explain it but yeah. There is another video i did shortly after this one on making a true Hirth joint since this is just the general shape. What is DSM?

[@fortifor5410]

Yes, of course. I am just saying that it requires less number of steps. Design Spark Mechanical is a very smart 3d cad with few options only but would allow to do quite a lot if work sequence is right. Nevertheless Fusion 360 is so much better in general and would allow to model more complex shapes and this is why I switch to F360. Just saying that some simple modeling may be easier to do in DSM that is all. For example you can move and rotate plane as you want. You can move sketch grid, rotate it etc. in sketch environment. I am new to F360 so still stick to my DSM habits. I know that I don't use F360 very well so should restrain myself from comments. Thanks for your video. I will also look at the other one.

[@LearnEverythingAboutDesign]

@@fortifor5410 all comments are welcome! I haven't used Design Spark so I just wasn't sure what DSM was :) Here is the Hirth Joint video kzbin.info/www/bejne/oJqrhnien8ZsjJIsi=-vg-uRvomP5cQ4_4

[@305doveridge]

i followed your instructions and printed two. they would not fit together. any thoughts?

[@LearnEverythingAboutDesign]

Yeah, this video was a general look at how to loft to a point. If you need two of them to fit together nicely its called a Hirth Joint, and there is a bit of math involved. I have a video on that as well with a file with all the parameters set up here. kzbin.info/www/bejne/oJqrhnien8ZsjJI

[@305doveridge]

@@LearnEverythingAboutDesign thanks, i will check it out.

[@tonysmith7702]

Very nice!

[@LearnEverythingAboutDesign]

Thanks for the visit

[@farhadardjomand8175]

This serrated joint is not actually a Hirth joint, because the angles of the top and of the bottom of the teeth are different, causing improper engagement.

[@LearnEverythingAboutDesign]

You are correct. I did a video on a hirth joint using parameters. This video wasn't intended to be a true to form hirth joint. If that is what you want look here. kzbin.info/www/bejne/oJqrhnien8ZsjJI