@mowcius I feel sure these brackets need to be officially named and stocked on UDC UK / elsewhere.
I’d snap up a pack and deck my unicycles with nifty bags.
One day maybe a 3D printer will enter my life, but at the moment I’d just enjoy seeing your work for sale to the unicycling community 
I totally agree
Hi Dino
Your lezyne caddy bag looks great tucked under the seat like that, can I ask which size that is ?
Thanks, I’m very pleased with it.
It’s the Lezyne M Caddy
Thank you for providing the link! It is nice of them to show us what it will hold, with a real-world example. 
I might have to try the donuts just to make sure they really do fit 
Thanks for that Dino 
Having only one wheel your really having a bad day if you need two inner tubes!!
I thought it was probably SolidWorks, I’d like to learn how to use that just for the sake of it but it is another one of those things I’ll probably never get round to. I had various versions of DraftSight installed over the years and sometimes got one of their resellers phoning me up to see if I wanted to upgrade to SolidWorks… from a free 2d drawing tool to a commercial SolidWorks licence would be a big upgrade!
I hadn’t heard of Titans of CNC Academy – it looks pretty interesting, I’ll have a look round there.
I put both FreeCAD and OpenSCAD on a machine a few years ago – that is basically as far as that went. I liked the idea of the script based modelling in OpenSCAD but having time to play with these things is always an issue – that, and the fact I spend large chunks of time fighting with various CAD tools for a living, kind of lowers the motivation for playing with a new tool for fun – albeit MCAD and not another EDA tool. I’m not keen on web-based tools either, I’m maybe just old-fashioned though 
If UDC UK wished to sell them, then I’d be up for doing a redesign for increased compatibility, some accelerated life testing, and a small print run for sale, but I’ll let them contact me if they’re interested.
The design’s out there free for them to do what they like with though.
So I received Mowcius’ loops in the post a bit ago, and they’re definitely solid enough, zero flex in them at all (I was originally a little worried that they’d eventually flex at a weak point and break)!
Right now I’m using a bag that I made myself out of some bright orange material usually used to build lifeboats with a couple of bike toe clip strap things and it’s all holding up well! Got a multi-tool, heavy duty tyre lever, e-pump and a spare tube in there with space for a sandwich and donut if needs be!
Thanks very much to Mowcious for sending me the hoops! Super happy with them and will continue to try and break them
They really are quite solid and as far as I’m concerned are perfect for what is required of them
Absolutely! 
Apparently it’s the essential saddle bag item these days
Thanks to mowcius for some of your little brackets. I went for the lezyne S caddy so I used the front main saddle to post bolts.
I’m guessing the S only holds one donut 
Oooh. I’ll be interested to know how they hold up as the bolts have to be significantly tighter to hold the seatpost to the seat than to hold the bumper on.
Mounting them there hadn’t even crossed my mind but it looks perfect!
I did make a little aluminium bracket as I did think that about the main seat bolts but with the plastic ones they have tightened up nicely so we will see.
My aluminium bracket tucked the bag right under the seat which made it tricky to undo the zip as it was too high, the plastic ones drop it down slightly which makes opening the zip easier.
I did something similar, but in my case I just cut a piece of aluminum about 3x7 cm and drilled two holes in it to match the back of my seatpost. A zip tie holds the frame bag to it.
I finally got around to successfully designing some that work with saddles that mounts with nuts rather than bolts.
I’ve updated the Thingiverse with the v4(!) version.
It also works as the v1 does with bolt-fixing saddles, but is very slightly larger with a slight angle, so you can take your pick.
To mount them on saddles with nuts you will still need either a 10mm box spanner or a slim 10mm socket. I couldn’t come up with a sensible way to make them so that you could tighten them up with a standard spanner and still be confident that they would be strong enough to last.
Oh, and I’ve got a Topeak bag on order so I can make this mount correct.
Which bag did you order?
I’ve only seen mini saddlebags on this thread. I’m considering a 36" trip over a week in a few months. I think I’ll fall for this bag (which is one of the larger saddlebags => 17L). I wonder if your bindings are strong enough. I’m thinking of using this bag with a handlesaddle by passing the loop between the saddle frame and the foam.
Last year I made a one week trip with another system with a 15L waterproof bag and a rack. It was fine for a 29", but on my 36", I have much less space between the saddle and the wheel. Anyway, your bindings seem to be adapted for these 2 configurations (as long as you use a classic saddle and not a handlesaddle).
So I just went for another little wedge pack as one of the cheapest options that has the Topeak Quick-Clip mount.
I suspect that the hoops I’ve made probably would be strong enough, as they’re printed so that you’re trying to pull the plastic apart rather than separate the layers, but there are a couple of issues with that idea.
One is that the hoops aren’t really in the right position for the angle that such a strap ends up at, and the other is that all of that kind of bag use non-removable clasps which wouldn’t fit through the hoops.
Once I’ve done the Quick-clip mount I might give a more suitable mount for this kind of larger bag a go, but I think realistically it’s getting a bit big for 3D printed (or even non 3D printed) plastic parts and I’d be inclined to fabricate something out of metal.
