here is the first pre-cast

How about inner space for a battery for powering the camera, hdmi locks would be good.
Space for removing the sd card and flipping the lcd.
Cool idea by the way.

@PerryWilson

Can you show me actual 3D design of the cage?
How about cost calculations?

@PerryWilson

And how you want to produce it?
Both ReWo and TrusMT use CNC machines.

Interesting to see what you come up with, Perry. We're looking to have a local CNC guy do a couple of cages for both a GH2 and 60D - Gotta love experimenting with these. Love the ReWo and the Ghost cages, but waaayyyyyy to pricey for realistic sales.

This is great news. The ambition shown on these forums is inspiring.

One thing that is critically important is how the spacing of the 1/4 20" and 3/8" attachment points on the cage will be handled. How will you determine the placement and spacing?

For those of us that already have 15mm rail blocks - how can we ensure that our rail blocks can mate with the GH2 cage? (and thus get our rods both below and above the cage if needed?)

For example, the universal rails blocks pictured below have two 1/4 20" holes spaced 1.25" apart. Hopefully the cage could accommodate this spacing, centered both on the bottom and top of the cage so a set of 15mm rods would line up correctly to the camera.

Awesome! Should the 1/4 20" holes on the cage that would be underneath the camera be countersunk so the bottom of the camera could sit flush against the cage? In fact, perhaps all of the attachment point holes should be slightly countersunk? What does everyone think?

Also, perhaps the inner bottom of the cage (the part that the underside of the camera would sit on) should be lined with some sort of thin rubber grippy lining? Because the GH2 only has one tripod screw hole, it could rotate/slip if it was just sitting flush against smooth metal.

For example: the topside of Zacuto's Gorilla plate is lined with a grippy rubber material (see pic). This totally prevents the GH2 from rotating or slipping.

Also: note how the tripod screw attachment on the Gorilla plate is oblong and not just a fixed hole. This enables you to adjust the camera fore and aft. Could the camera attachment point on the cage be oblong like this to allow this kind of fore/aft adjustment of the camera within the cage? And along that line of thinking: the all-important hot shoe attachment point on the top of your GH2 cage would have to be oblong as well.

Would this be possible?

Perry Wilson, THANK YOU!

good well thats $900 I dont have to waste right now

@Vitaliy_Kiselev: Perry is doing actual solid modelling, like people have done for centuries, before there were computers, let alone CAD software. :-)
I don't see what there is to be calculated?

@Vitaliy_Kiselev:

It doesn't sound like a mad topic, and I'd rather risk someone posting about something that doesn't actually get made than demotivate someone who is capable of creating something cool?

@Vitaliy_Kiselev:

'About demotivation - I don't give a fuck'

Haha, it shows. :-)

@PerryWilson

It is not some breakdown.
I just want to see equipment that you'll use, and see real calculation of production and associated costs.
IF you really did many things you must clearly understand that I mean.

@PerryWilson

This is not (and never will be) a place to talk on such level, Perry.

I have strong feeling of another endless talks here. I'll keep it watching for few days and will close if it will be so and I won't see things I talked about.