How to import and open a scanned gasket at the correct size

[dchannon]

Every time I scan a gasket for tracing round, it imports at the wrong size, is there a correct way to do this. so it the correct size in fusion 360??

[g-andresen]

Hi,

To retain the dimensions, mesh files should be inserted into the current work space using Insert > Insert mesh instead of File > Open.

Günther

[dchannon]

And is a JPEG the best file to scan??

[laughingcreek]

you have to calibrate your canvas after inserting it.

[MRWakefield]

Can you confirm this is a 2D image scan rather than a 3D mesh scan?

EDIT: Sorry we cross posted - you've answered my question.

[TheCADWhisperer]

@dchannon 

Attach your “scan” file here (whatever format it is).

Someone here will demonstrate how to run Calibrate.

[dchannon]

So it doesn't bring it in the correct size you still have to size it?? How.

[Warmingup1953]

If your scan is from a typical flatbed scanner it should, when inserted as a Canvas be at the correct size ( or very very close at least. If not you can Right click on the Canvas' Icon in the Tree and Calibrate. Have you done this before?

[TheCADWhisperer]

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@dchannon wrote:

So it doesn't bring it in the correct size you still have to size it?? How.

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Calibrate.

[dchannon]

This is the type of gasket I am trying to insert the correct scan as the scan.

 

[TheCADWhisperer]

@dchannon 

Do you own calipers or at least a scale for measuring?

[Warmingup1953]

Ok this may be advantaged by some White Board marker dots on the scanner glass and calibrate those. Some say add a steel rule on the Scanner bed...I use dots!

[dchannon]

I own callipers

[TrippyLighting]

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@dchannon wrote:

I own callipers

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In that case I would measure the interface geometry that gasket sits on, not the "soft" rubber gasket.

Photocopier and even flat bed scanners also use optical systems and distort geometry to some degree.

Once you have sorted you how to get the imagery into Fusion 360 and calibrated, I would stick to lines and arcs to represent the geometry. Don't uses splines. 

[TheCADWhisperer]

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@dchannon wrote:

I own callipers

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Can you provide information on a real world diameter of one of the features?

What are you desired units? mm? inches?

[dchannon]

The small holes are 8.5mm

[dchannon]

And it looks like you levelled up the gasket how??

[dchannon]

As you may have guessed by now I'm new to this but learning fast thank you and everyone else for your reply's

[Warmingup1953]

The CADWhisperer has done a fantastic job there!... You have the option to rotate the Canvas.....

[dchannon]

Yes I have used that but still struggle to make it 100% level???