Working with canvas

Does anyone have suggestions about ironing canvas?   I had a terrible time getting it ironed out after the pre-wash for an Amy Butler bag I was making.  I'd love to make another but don't want to deal with the canvas (and we have what I think is a pretty capable iron!)

I had the same problem recently.  A partial solution is not to dry it completely.  If you iron it while it's still a tiny bit damp, it won't have so many wrinkes and it will be easier to get those that remain out with a very hot iron -- not completely though.  Maybe someone else has a secret they'll share with us.

Now that is nice question...I think thelow dry probably will do the trick!

I think ironing while damp should help alot & I would use spray starch  or sizing also. Spray it on just before ironing & give it a a minute or two to sink in.

I always forget about my fabric in the dryer...so while ironing while damp is a very good solution, a large spray bottle of water next to the iron will also do the trick (oh, I should say if you also have a steam iron that leaks on you more often than it steams properly).

For those very stubborn areas you could spray it with water and then iron or use a damp wash rag on top of the section your ironing.  Either way your going to have to get it damp to work.

I use a lot of canvas in my sewing and I've learned that it just works better if you don't pre-wash it. It's just not a fabric that holds up to washing, so I also encourage those who receive things I've made out of canvas to wash it ONLY when absolutely necessary.

Do you find that it shrinks?  I'm always worried about using it as an interfacing in something that I will eventually wash and having it pucker up and do weird things under the surface of the project.  It certainly would be easier to deal with with not having to wash it.

I found the same thing. I don't pre-wash it. I spot clean only when necessary.

I also don't wash it.  Canvas is just too hard to work with after it's washed. 
I recently discovered the brushed, softer canvas which can be washed and dried easily.  It's a little thinner, but just as strong in my opinion.  (I would love to provide a link or recommend a name, but I get it at Fabric Depot here in town- Portland.  I know it only by the feel and the blue label.  I'll try to remember to write it down the next time I'm there.)   

Yes, do tell if you remember that fabric's name.  I was hesitant not to wash it, but how likely am I to put that bag in the washing machine anyway?  Probably never, so why go through the misery of washing the canvas...especially when it's so nice before...

So glad I found this question.  Now that I know not to bother washing it first, what size sewing needle do you use when trying to get through a few layers of canvas?  I just tried Heather Ross' tote bag from her new book and had a very hard time with the handles.

Sewing through layers of canvas, I would use at least 90/14.  If there's more than 4 layers, I may go up to 100/16 which is a huge needle, but it may save you some headache. 
I also found the name of the softer more washable canvas I've been using: Thompson Manufacturing.  It feels like a brushed canvas which is soft and has an almost flannel-like feel to the top of it.  It has been washing well for me although the darker colors tent to fade a little.  Oh, and it's 100% cotton.  Hope that helps!