Tidy corners on wide binding

[Ploshkin]

I know how to get nice corners on narrow quilt binding but as soon as I try to do wider binding I can't get the corners to be nice and square.  They just end up rounded with the corner of the wadding squished down.
Ive just been trying to do a 5/8 inch binding using a 3" strip folded in half but I've given up and trimmed off the excess wadding and reverted to a narrow border because I just can't get decent corners.

[Flobear]

It took me quite a bit of experimenting to work out how to do tidy mitres on my Stars quilt binding which was wider than a quarter inch. I need to have a think about the formula, as it were.

[Ploshkin]

I think I must have been doing one of the corner folds to  the wrong place.  I was doing the folding level with the quilt corner edges which I can see wasn't giving me enough fabric for a decent mitre.  So, there's something I need to do differently but not sure what.

[Flobear]

Yes, it's definitely something like that. It also makes a difference if you're putting the edge of the binding level with the edge of the quilt or back from the edge. That's why I ended up doing a few practice goes.

[Iminei]

You can always snip a teensy corner off the wadding ... I actually find wider bindings easier to mitre.


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[Ploshkin]

I did try snipping off a teensy bit of corner @ iminei, then a teensy bit more, then a .......... But it was just the same leading me to think i had got it wrong at the folding stage.

[realale]

I did try snipping off a teensy bit of corner @ iminei, then a teensy bit more, then a ..........

That was the problem I had with the bookshelf quilt I made my granddaughter for Christmas. One corner was so mangled i had to cover it with a corner bookmark!! 
My excuse is that I'm not a quilter..... 

[grndkntrl]

You probably already know these techniques, but in case you don't, here's a couple of Professor Pincushion videos that I've bookmarked showing a couple of tricks for making tidy corners, which might help you with this.


I've set the link timestamp to take you directly to the most pertinent section:

• How to Sew With Bias Tape - Single Fold - Double Fold - Blanket Binding: https://youtu.be/-KPDanntOlU?t=431
• How To Sew A Fabric Napkin With Mitered Corners: https://youtu.be/6PIAeb7bB3s?t=115