First you have to know, that this rig was made for MY camera ( Canon EOS 700 D ). If you have a camera that is bigger or smaller you have to change the measures for your own type.
Ok, he we go:
Before you cut out anything you make an example in thick paper (carton), so it will be ok if something goes wrong. And you can make some changes until you are satisfied – and then you take the aluminium. I have done it with a drawing in WORD in 1:1.
To make the two C brackets I have used 4 aluminium-plates in 300x300x3mm. Too much (!) but the rest was used for other projects…I have cut it out after I have made a drawing on the surface of the plates by using my drawings out of WORD.
The next step is to make all 4 pieces equal! So I clamped them together till I finished the whole process of drilling, sanding, polishing….really a lot of work to do!
Please take care of the position of all holes, maybe you need in the front bracket more than in the rear bracket…your personal choice of course!
Now there are 4 C brackets!
To put two of them together you have to take some solid aluminium – just like a sandwich!
I have taken a smaller distance on the front bracket, a bigger on the back one because this one must be connect with the base-aluminium of the rig!
For every distance-piece of aluminium you have to drill 3 holes on both side ( 6 overall ), than you have to tap the holes for 3mm screws and put them in. Important: Do not drill the holes on the same level, maybe the screws met together in the middle and so it’s not possible to tighten the unit! Be careful of the thread in 3mm it is a little bit sensitive. Normally you just need three connections for each bracket but if you need some additional accessories it will be yours to design it – like the connection for the microphone on the right side with a small ball head.
Next step is the base-rig itself: I have taken 15mm rods and a massive piece of aluminium. The distance between the rods is exactly 60mm! It’s an international standard for this kind of rigs.
But to tighten the two rods in the aluminium is not easy! First the holes must drill very exact in the aluminium. If they are not even justified you will get a problem. A mistake less than 1/100mm at the base will increase to more than 2 or 3 mm at the top! To fix the rods I have used four screws through the aluminium and the rods, two each rod! And – by the way – I have used 3 attempts to get the final result!
For the upper section I have used some smaller rods 12mm diameters and a distance of 50mm. This was grounded by my personal design. If you need the upper section for additional accessories for a monitor or something like this, you have to change the measures in 15mm rods and 60mm distance!
For my last rig/cage for my Sony AX 100 I have used some rodclamps from the company Smallrig - much better to use them, very precise and not too expensive. Using them allow you to use the rods without any drill operation. And of course you can use stainless steel rod pipes...very stable!
Now the rear bracket can be screwed together with the base aluminium, the same way as described above – drilling, tap and screwed with 3mm screws.
This is the place for connecting the system with a tripod with a quick release plate and some additional solid aluminium blocks...
Ready? Not yet…. the grip: I have used a 19mm rod just for the grip, maybe you can find a grip for bicycles in a better design… to fix the grip I have used 2 additional triangles and fixed them on the first bracket. So there are 5 layers of aluminium…and extremely stable!
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