Thread: Hidden wooden hinge jig / Cosman hinge jig

Making one for your own use is one thing, selling them is quite another. Have you checked with Rob that you’re not violating some IP?

It isnt patented or copyrighted.

It isnt novel or non-obvious. Its the technique that is novel and even then its a twist on traditional wooden hinges. Its a tool that enables a technique to be used.
He tells you how to make one in one of his videos. This is a bit of metal with two holes drilled in it. Its not a Festool Domino.

His is designed differently than mine even though it is ostensibly the same principle. A short piece of round bar stock with two holes drilled in it. I didnt reference or copy his design. I looked for a way for me to accomplish the same outcome. Looking at his now it has interchangeable heads which is quite clever but again, not something that can be patented.

I see Bridge City and Woodpecker copies on Aliexpress and TEMU. The infringement there is not that they both shave wood or measure. Its that they seek to encroach on innovation and aesthetic of the established brands. There are many other options to achieve the same ends. Aliexpress and TEMU seek to hijack the brands reputation and in turn damage their company as a whole.

I am not trying to sell these as Cosman replicas.

I am making my own solution to the same problem which is not novel and is obvious.

As such, I dont feel it necessary to get permission to make and sell something like this.

I understand your concern but I dont consider this unethical. The maker community is just not like that. How many dovetail hand saw jigs are there out there? People sell plans for obvious and easy things if they want to make money solely off the idea. If youd like to purchase his then you are very welcome to do so. If you think me selling my version of the jig is unethical then you are welcome to contact Rob regarding this matter.

Chill out mate, I was posing a simple question. No need to jump down my throat. Your post was written very much like you were replicating Rob’s jig. And in previous threads where you’ve suggested selling them whether or not you would be replicating them exactly, you refer to making ‘Cosman hinge jigs’. Would you like me to link those threads here?

I gave your post a lot of thought and posted my reply. There was no personal attack or jumping down your throat. This thread is titled with Cosman in the name too so I understand the confusion. I should have titled it Cosman style hinge jig or just not mentioned his name at all.

Anyway. I don’t want to derail this thread. If mods deem my plan to be unethical they can close this down without protest.

I have the Cosman one in metric. i bought it before Covid and the large increase in freight cost. It was still expensive. I have the full set but have only used the smallest one so far. Sounds like a good idea. It’s not like you would be competing with Rob. I would be interested in a dowel making jig.

If you make a metric kit of varying sizes I’d be happy to be a Guinea pig to try them out as the ones from the states are expensive along with shipping

Cheers
Nathan

Id join Delbs in guinea-pigging.

Hi Paul, I'd be interested in 1/4" and 3/8". I have a veritas dowel maker kit so I can make any size dowel I want. Being Nth American, it's imperial. I can adjust it to make metric dowels but it's easier just to go with imperial.

Ok great. Ty to the volunteers.

I am thinking $40 a piece with $10 postage. This would include the jig, case, allen key, 3 drill bits, a cheapy ball nose router bit and 2m of tig rod cut up to fit.

Not looking to make a million. Just some extra funds to help pay for this moneypit of a hobby.

I will provide pics once the parts come in so you know what youre getting. Shouldnt be more than a fortnight or so.

Thanks all.
Paul

Hi Paul, I would also be interested in any two of the following sizes you decide to make, 1/4", 3/8" or 1/2".

Slight hiccup with Aliexpress (who'd have thought?). Turns out I ordered 6mm shank router bits instead of 1/4". Also, their 1.6mm drill bits are 1.44mm and their 3.2mm drill bits are 3.1. You get what you pay for. It doesnt seem like much but because the drill bit sticks out as far as it does and its captured within a cylinder it has no room to self correct. This means the hole will be off centre and with the bits I got delivered it will be too far off centre for the purpose.

I have ordered some Makita and Sutton bits locally, however, that means local pricing. Ive ordered 1/4" shank router bits which are 2 weeks away. Given Boonings sells the equivalent for more than this jig in total I figure its worth the wait. Quality is not as good, sure, but they are doing very little work. I have also sourced bright steel for the round stock. Tricky to drill a 1.5mm hole dead centre (quite a few broken drill bits so far meaning quite a few blanks chucked out with 1/2 a drill bit in them) but it is more resilient to marring in the drill chuck.

I was hoping to keep the price at $40 plus shipping but reputable drill bits x2 adds $5 to the costs. First round of orders will be $40 and next batch will be reappraised with maybe a $5 increase to cover new costs.

Cheers,
Paul