Pants Regular Straight and Slim Straight fit advice needed

[artofwill80]

I'm going to an alterations shop to get my chinos, corduroys, (slim) and jeans (regular straight) trimmed.
How many inches of fabric should I be able to pinch away from my skin for each of my pants for both proper straight fit jeans and proper slim fit corduroys and chinos?

Should corduroys fit in a similar fashion to chinos or should they fit like regular straight jeans?
Thank you for your previous responses.

 

[Ich_Dien]

It depends largely on the fabric how much you'll be able to take in. All trousers can be as slim or as wide as you like - your tailor is the one to trust in this situation not us.

 

[artofwill80]

I'm going to an alterations shop, not a tailor.
Tailors in Korea wouldn't even waste their time with doing alterations on clothing I didn't buy from them.

 

[Claghorn]

Well, there are several good alterations tailors in Seoul. Not cheap (or quick), but very skilled. PM me if you'd like the info.