Modifying belt bag

[Sheilajeanne]

I'd like to add two more compartments to a belt bag, same design as the previous one I did. 

The bag is sewn flesh side out, then turned inside out once the sewing is done. It has 2 gussets in it, and what I would like to do is to add another layer of leather on each side of the gussets so the bag has 3 compartments instead of just one.

The leather is quite soft and flexible (upholstery leather). If I do this, will it still be possible to turn the bag so the finished side is out once I've finished sewing? 

Here's the original bag with a picture of the inside.

[Sheilajeanne]

You can see how the front of the bag is gathered into tucks to help it stay closed when it's on your belt. Of course, this is done after the bag is turned rightside out, which makes it easier to turn. You can also see the gussets sticking out on the left and right sides. The two new pieces would be the same size as the back and front of the bag, and would be sewn into the same seam as the gussets, and go the full depth of the bag.

[Rockoboy]

I don't see how you will be able to turn this bag inside out after sewing if you install an inner gusset. Can you install an inner pocket attached to just the back or front?

[fredk]

If you sew the inside panel directly to the front and/or rear panels, they need to be flesh-flesh. When you go to turn it inside-out the double panel will turn as one, the outside of the outside panel will still be outside. I'd keep the tops of the extra inside panels weel short of the tops of the outside ones. especially the rear one, makes for easier access to the pocket

Edited March 29, 2018 by fredk

[fredk]

5 hours ago, fredk said:

If you sew the inside panel directly to the front and/or rear panels, they need to be flesh-flesh. When you go to turn it inside-out the double panel will turn as one, the outside of the outside panel will still be outside. I'd keep the tops of the extra inside panels weel short of the tops of the outside ones. especially the rear one, makes for easier access to the pocket

Part of that is false; the inside pockets do not need to be sewn flesh to flesh with the outside pieces; they just need to be sewn directly to the outer panels so that the two become one. The sewing of the inner pockets to the outside panels can be at the same time as the gusset is sewn to it, if its to be about the same size