After scaling down a model, when I make a new sketch, my axes rotate and skew my sketch to my model.

[taggartf1]

After scaling down a model, I found when I try and create a new sketch, the sketch planes are skewed to the origin planes of the model, making creating sketches based on part geometry very difficult. Any ideas on how to fix this? ( I have attached a photo below). The black cross (in the photo) should run parallel to the lines in my part as they do when I am not creating a sketch. I have tried editing the sketch axis coordinates systems but to no avail. 

[japike]

Is your sketch geometry constrained to the part origin? Can you upload the part so we can take a look at it?

[johnsonshiue]

Hi! Redefining the sketch coordinate should help the particular sketch. Please share the file. I would like to understand the behavior better.

Many thanks!

[taggartf1]

Many thanks in advance. 

[kacper.suchomski · Accepted solution]

Hi

The algorithm selects axes based on existing geometry. If the automatic selection does not meet your expectations, you can set them manually - according to your preferences.

[kacper.suchomski]

And here is the reason (existing geometry) for the confusion:

[japike]

First, you have several sketches, starting with sketch 1 that are under constrained. Unless you have a really good reason to have those under constrained, make sure all of your sketch geometry is fully constrained.

Then sketch 13 has an invalid axis/origin error - fix that.

Sketch 19 and sketch 128 have dimensions to unresolved reference geometry - fix that.

Fix that stuff then, see if it behaves better.