topic Re: Circles in sketch are not round in Inventor Forum

Circles in sketch are not round

jorisQUNSN — Tue, 11 Apr 2023 12:48:00 GMT

Hello,

When i draw a cirlcle it's not displayed as a round circle. Does anybody know how to fix this?

Re: Circles in sketch are not round

JDMather — Tue, 11 Apr 2023 13:01:17 GMT

@jorisQUNSN

Can you Attach your file here that exhibits this behavior?

Is this a new issue, it used to work but now it doesn't? Or did it never work correctly?

What are your system specs - especially graphics card?

What version of Inventor are you running?

How far is your geometry from the Origin?

Why are the same dimensions repeated multiple times?

Is your Display Quality set to Smooth, Medium or Rough?

Re: Circles in sketch are not round

jorisQUNSN — Tue, 11 Apr 2023 13:02:49 GMT

Normally it works fine.

Processor 13th gen intel core i9-13900 2.00GHZ

32 GB ram

NVIDEA Geforce rtx 4080

i am using inventor 2023

Re: Circles in sketch are not round

JDMather — Tue, 11 Apr 2023 13:06:31 GMT

@jorisQUNSN

A *.png file is not a *.ipt file?

I added additional questions to my original reply.

Re: Circles in sketch are not round

jorisQUNSN — Tue, 11 Apr 2023 13:20:50 GMT

here the IPT file

Re: Circles in sketch are not round

SBix26 — Tue, 11 Apr 2023 15:28:11 GMT

The file you posted looks nothing like the images you posted:

One sketch containing four sketch blocks, all similar to what you see above. Wrong file, perhaps?

Sam B

Inventor Pro 2024 | Windows 10 Home 22H2

Re: Circles in sketch are not round

kacper.suchomski — Tue, 11 Apr 2023 15:28:51 GMT

This is most likely due to hardware/software performance. Your sketch is ~63 m; it's a lot. However, exact mathematical cylinders are created during the extrusion operation.

Re: Circles in sketch are not round

SBix26 — Tue, 11 Apr 2023 15:35:41 GMT

OK, I didn't zoom in far enough to see the circles! And yes, it is very large for Inventor's math to work reliably, especially in graphics.

Sam B

Inventor Pro 2024 | Windows 10 Home 22H2

Re: Circles in sketch are not round

rhasell — Wed, 12 Apr 2023 00:04:54 GMT

Your sketches are too far away from zero.

The sketch1 it's self looks okay at 31m, but the problem lies with the blocks.

The Blocks are over a kilometer from zero.

Edit each block and move them closer to zero, this will fix your problem.

Re: Circles in sketch are not round

johnsonshiue — Wed, 12 Apr 2023 19:19:37 GMT

Hi! The problem is indeed with the distance between the origin and the block definition geometry. Edit the sketch block "deel1." Move the cursor to the geometry. You will see the coordinate reading on the lower right is extremely large.

I suggest you delete the Fixed constraints and move the sketch geometry closer to the origin. Then the circles will be circles.

Many thanks!