What kit? This kit: the RPF
Due to the first shown and extremly nice build binocs from that kit on the RPF, i felt the urge to work on mine, too. And i decided to machine some upgrade parts first.
I made some of the masters to cast parts, one of them was the inner parts for the eye-pieces. Markus included the upper part of them within the printed rings before making his mold - that looks nice, but now i had to modify mine to install alu parts. When working them thinner they loose stability, so i needed a kind of support device to clamp them securely for machining.
I decided to use some Delrin to make that device - drilling 8 holes on a rotary-table, then turning it out, matching the outline of the upper eye-pieces.
Now the part can be pushed in:
That way itīs able to chuck them up without deforming the parts. It enables me to lathe the inner details out.
Additional i decided to make me some little brass parts - turning 6mm stock down to 5mm on one end and 3mm on the other end, then threading the smaller side:
The new eye-pieces - outer rings in their new shape, new alu parts, and the inner alu tube that will hold the lenses.
This is the part thatīs needed for the small on/of switch
Here you see what the earlier mentioned small brass parts are for - as i found no useable brass bolts with that special shape, to mount the shield, i made some. Man, these were a lot of work for so few and small parts .
And the clamps for the upper side, the small turret still needs to be drilled out.
All the parts together:
On the binoc body:
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Maybe you want a explanation why i changed the design of the alu parts for the eye-pieces, away from the parts i originally made.
Itīs easy, they were designed and made at that time to fit the lasercut lenses, provided with the kit.
For my upgrade parts i wanted more versatility now, to enable them fitting with cut thin film/plastic discs, thin lenses, thick lenses, ..... you get what iīwant. I donīt know how thick the lenses will be that i plan to find and use ...
Due to the inner tube with 22mm dia, and the visible opening of 18mm, you can use any found lens from 18,5 up to 22mm
Pushing the inner tube higher will hold any lense as thin as decided to use
If a thicker lens is used ..... the tube just will not be pushed that high.
With inserted lenses
And this are 2 lenses from my greeblie box. I will not use them as they are to different from each other, not only their thickness but also their curve ....... i just used them to show how extremely different parts could be used .....