3D Printing and Bookbinding

There are at least two people selling 3D printed Bookbinding tools. I thought I'd give a try at designing my own for my specific needs and style (such as it is).  I have fixed sizes of notebooks that I make.  The covers are A4, A5, and A6 with the bookblock slightly smaller.  So I thought I'd try designing my own where I like to put the kettle stitch and holes for the linen tape.

Designed in Google SketchUp 8

Now I have a Creality CR-10, lots of people have had great success with theses inexpensive machines.  Sadly I'm not one of those people.  I've had parts break, and there is always something going wrong with it.  Currently I have an under extrusion problem that I can't figure out.

So after six and a half hours and four failed starts I finally had my hole awl guides.

You can see the under extrusion as it looks like the layers are separating. I also should have increased the wall thickness as the needle went through the side by accident.

Fits perfectly!

I honestly wish I had some carpentry skills because these would look nice made out of some hard wood, stained and polished up!

In theory it works. I will just have to recalibrate my machine (again) and print off something with more thickness.

'H keys' for my sewing frame.

I have some other ideas of how I can incorporate 3D printing into my bookbinding. Corner cutting guides, relief on covers, book clasps, possibly even a Medieval bind with a 3D printed cover instead of wood. I'm still experimenting but with all my hobbies and my long weeks at work I don't have a lot of time to really come to grips with my 3D printer.