topic Re: How to create 'indent' in mating parts in Fusion Support Forum

How to create 'indent' in mating parts

aesilky — Fri, 17 Jun 2022 03:42:36 GMT

I've been searching but haven't found anything like this.

I have a solid body, that I have cut with a cylinder (glass, which is 2.45mm thick) into two bodies - B1 and B2.

I now want to 'cut' a rectangle into the 'inside' face of each body, to accept a super-magnet at matching points, such that the magnet in B1 lines up with the magnet in B2. I want to do this at 4 points along the length of the body.

The 'super' magnets are 6.5x10.6x1.75 mm. So, what I want to do is to 'cut' a 7x11 by 1.75mm deep cut into the two bodies, at the same point (such that they match up on each side of the glass tube).

I know that this is hard to describe - so, please let me know what I can provide to help.

Re: How to create 'indent' in mating parts

aesilky — Fri, 17 Jun 2022 03:48:13 GMT

I probably posted this to the wrong forum, but I'm not sure how to change that.

Re: How to create 'indent' in mating parts

aesilky — Fri, 17 Jun 2022 03:59:45 GMT

I'm somewhat of a Fusion 360 'newbe', but I think I could use the 'Extrude' to put one of these into one of the bodies, my stumbling block is to match up the same 'cut' on B2, such that they will line up on each side of the glass tube.

Re: How to create 'indent' in mating parts

hamid.sh. — Fri, 17 Jun 2022 06:08:13 GMT

@aesilky wrote:
... I know that this is hard to describe - so, please let me know what I can provide to help.

Your *.f3d file (or a similar one if you can't share the original) and a picture or two of what you have and trying to achieve will help.

Re: How to create 'indent' in mating parts

davebYYPCU — Fri, 17 Jun 2022 06:30:20 GMT

Cut the notches in both parts at the same time, with a sketch on the splitting face,

Extrude 2 sides 1.75mm deep on both sides, tick both bodies to cut.

Might help

Re: How to create 'indent' in mating parts

aesilky — Sat, 18 Jun 2022 19:18:14 GMT

For @hamid.sh. , I have attached my design file. For @davebYYPCU , I will attempt your approach. The thing is, that the cutting tool isn't a single face - though the thickness probably won't make a big difference if I just select one or the other. However, I would be interested to learn the approach when the cutting tool is much thicker. For example, if my cutting tool was 1/2" - 3/4" thick, how would you go about it?

In the design I've attached, the 'Base-Complete' has been split into an 'inside' and an 'outside' using the 'Glass Tube'. With the 'Base-Complete' split into 'Base-Inside' and 'Base-Outside' using the 'Glass Tube' as the tool. I want to create indents into each of the Base-Inside and Base-Outside that can each hold one of the (super) magnets - such that the Base-Inside and Base-Outside can be held togeter, through the glass tube, with 8 pairs of the magnets. I've tried a few technics, but don't think I've found the best way.

In the end, the Base-Inside and Base-Outside will be 3D printed, then finished and the magnets glued inplace. The goal is that the super-magnets are strong enough to hold the inside and outside base inplace without the need to have any type of end-plate.

Re: How to create 'indent' in mating parts

jhackney1972 — Sat, 18 Jun 2022 22:36:05 GMT

You can follow along in the Screencast and the attached model. I started off by changing the appearance since it is very hard to see with such a dark material. It is usually best to wait till the end of your design to apply appearances and materials. Please remember you are on a curve so the magnets pockets have to be calculated to be sure the flat magnet is completely buried in both the inside and outside curves.

Re: How to create 'indent' in mating parts

davebYYPCU — Sat, 18 Jun 2022 23:52:57 GMT

Slightly different sketch, but same detail.

My construction plane is set at pattern spacing, 1.6 in

Project > Intersect the bodies, and draw a vertical centre line, set depth of cut from each body (1.8mm),

and used symmetric thin extrude to cut both bodies, (fillet corner edges if required before the pattern)

set spacing to 1.6mm and pattern (feature/s) the other 4 magnet sockets.

Might help....

Re: How to create 'indent' in mating parts

jhackney1972 — Sat, 18 Jun 2022 23:48:41 GMT

Corrected model is attached, I originally thought you wanted 8 magnets along the length but you wanted "8 Pairs of Magnets".

Re: How to create 'indent' in mating parts

aesilky — Sun, 19 Jun 2022 20:56:15 GMT

Thank you so much for the quick and detailed reply!

I am busy during the day today, but I will go through this in detail this evening.

Re: How to create 'indent' in mating parts

aesilky — Sun, 19 Jun 2022 21:09:43 GMT

To explain a bit more, the display will have three (slightly oversized) golf tees, that will hold three 'special' balls. The magnets will be two pairs at each end, and a pair between each tee - so eight pairs total. Once I use your approach, I'll post the finished design.

I thought that I had only applied the material/appearence to the glass tube. I wanted to do that so I could see it, but see through it while I was working.

Re: How to create 'indent' in mating parts

aesilky — Sun, 19 Jun 2022 21:15:12 GMT

So, the thing I'll need to change/adapt from your solution, is that I'll want to put the magnets (cut outs) at 15° from each side of center.

Re: How to create 'indent' in mating parts

jhackney1972 — Mon, 20 Jun 2022 01:51:08 GMT

Same process with the added steps of the creation of the sketch plane at 15 degrees. Once one side is done, simply mirror to the opposite side. I would create a Screencast but my recording computer is not available this evening. I will be able to do one in a tomorrow if needed. Model is attached.

Re: How to create 'indent' in mating parts

davebYYPCU — Mon, 20 Jun 2022 01:56:14 GMT

Edit sketch, remove the perpendicular constraint on the blue line, and make it 15 /105 degrees.

Cut the first pair, then mirror that cut to the other side of centre, (feature)

Edit the pattern and Cntrl Select the Mirror icon into the pattern.

if the starting position is not right edit the distance from the end of the block, with the sketch offset plane distance,

If spacing is not right edit the pattern spacing distance.

https://a360.co/3OvLlcJ

Might help....

Re: How to create 'indent' in mating parts

jhackney1972 — Mon, 20 Jun 2022 17:46:29 GMT

I changed my method a bit from my verbal reply posted earlier. I have attached a Screencast of the process I used to modify the model named Golf Ball Display - 4 Pattern - JRH to get your angled cutouts. The resulting model is the same as I last posted but, as I said, using a different process.

Re: How to create 'indent' in mating parts

aesilky — Wed, 22 Jun 2022 03:27:01 GMT

Thank you so much for the help on this. One thing that was really helpful in this was the technique of rolling back the timeline before making a change, and also selecting multiple items in the timeline. I had never considered doing that.