Performance issues when editing sketches

[ralabert]

Hello, let me tell you.
For some time now I have been suffering from slowdowns when editing sketches. They happen to me when for example I try to modify a dimension, nothing special.
I do not know if it has something to do that the sketches have many restrictions, such as symmetry.
The truth is that using the software becomes a desperate task. My PC is a new computer, with a very good processor and GPU, RAM, etc... then it breaks my schemes. Besides the files I use are not heavy at all.
Thank you!

[HughesTooling]

Rule is keep sketch as simple as possible. Don't pattern, mirror or fillet in a sketch, always try and use features in the timeline for patterning, mirroring etc. The symmetry constraint seems to slow things down so use as few as possible, quite often you can use midpoints instead.

Can you share an example f3d file for advice?

Mark

[TheCADWhisperer]

@ralabert 

This will be trivially easy to solve with your actual geometry.

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply for demonstration?

[ralabert]

Wow, first of all I would like to thank you for your quick replies and the interest shown. You guys are amazing.
No doubt then it must be for having the sketch overloaded with symmetries and so on. I would have to see how to do the operations I need along the timeline, right now it's hard for me to imagine.
Attached f3d file
Thank you very much again.

[HughesTooling · Accepted solution]

Don't have time to fix the whole model but take a look at the attached file.

Just sketch one quarter then mirror to create the rest of the parts.

Note the use of thin extrude to split the part, then pattern the cut.

Mark

[ralabert]

I see, and I understand perfectly. It was a mistake on my part to think that operations on the sketch, would improve the overall project performance, and it turned out to be just the opposite. I love to optimize my designs and that is something I was unaware of to date.

Thank you very much!

[HughesTooling]

Looking at the sketch I just noticed something  do not like.

This 30mm dimension will restrict what distance you can set for the circle centres, the 100mm dimension.

Better to have a horizontal line between the circle centres so the pitch can be changed without causing any conflict.

[TheCADWhisperer]

@ralabert 

See Attached simplified example.

I'll leave it to you to finish the cuts (roll back the timeline before mirror of cut).

[ralabert]

Hi, you are right. I have already corrected it.

Thank you!

[ralabert]

Absolutely brilliant TheCADWhisperer, no doubt you have become for me an example to follow for the simplicity with which you execute the design. I am already a follower of yours on YouTube.

Before your simplified design and thanks to the other colleagues, I tried on my own to finish it until I ran into another problem, every time I try to create patterns of the extrusions that cut the different pieces, I get a series of calculation errors, so I understand that to make all the other cuts, it would be best to create them in the sketch, can it be? But if I do it, I would overload the sketch again, isn't it? I understand that the proper thing to do would be to play with the operations not with the sketches. I feel stuck in that loop. Attached file.
Thank you very much.

[TheCADWhisperer]

What are you going to do here?

[ralabert]

Good question.
Since I can't fit a flap, I was thinking of adding it only at the other end of the circle. It's not much of a problem because all the previous flaps hook nicely during the rest of the pieces. And the thing is, I need a minimum separation between both large circles.

Thank you very much

[TheCADWhisperer]

@ralabert 
What are their purpose on the components?

My assumption is you have a limited 3D Print build plate and therefore you need to divide up and assemble after printing.

If my assumption is correct, will the components be permanently bonded after assembly? If yes, I have another idea for that connection location.

[ralabert]

You were right about printing it in 3D. It is not that the printing plate is small, but when I want to print it in ASA filament, the dreaded warping appears, and that my 3d printer is pretty good. Cutting it into fragments is the only thing that has worked for me.
And another thing, besides being able to print it without errors, it also serves me so that once assembled, the parts are interchangeable over time, so that if it breaks down from use, it is easier to repair. Hence the necessary clearance between parts of about 0.25mm or so.

Thank you!!