AstroDroid '76 Holoprojector Grasp film accurate retrofit

OpenR2

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This is a great example of an R2-D2 aluminum holoprojector replaced with a screen accurate plastic grasp.
The original screen used HPs had Bakelite (plastic) grasps.
They were not aluminum.
The fine details on the original plastic grasps is very very difficult to reproduce by machining aluminum.

2019-11-11 09.34.25-1.jpg


Here are some of the these details as pointed out by a prop maker after assembling on his R2 build.
The lip along the bottom of the grasp.
The rounded edges at the ends of the grasp ribs.

Vickers Viscount Lamp unique features.jpg


This is a picture of an orginal Vickers Viscount grasp that has been sacrificed in order to reverse engineer the correct cross-section shape.
Shown are a couple of other features that were difficult to capture on the aluminum versions.
The conic shape of the outer lip of the grasp.
The parting line from the Bakelite mold

HP.png


These grasps will fit existing aluminum HPs that have screen accurate correct threads.
The smoothest fine detail plastic is great quality and is exceptional at capturing all the fine detail of the Bakelite originals.

Capture.PNG
 
Where is this file available? I’d love to print some replacements for my aluminum ones!
 
Where is this file available? I’d love to print some replacements for my aluminum ones!

I’ve posted an STL back in 2013 based on this same laser scan but its not the latest version that is being used for the OpenR2 spec.

The older file is probably fine for FDM printing. I don’t think you can capture those fine plastic details with FDM.

The STL file that was used for the SLA prints shown in the photos above is a much higher tessellation quality and has all the parting lines and flashing from the originals. I’m working with the OpenR2 folks who will publish all the files as part of their spec.

If you are doing FDM ... you can download the older version at Vickers Viscount 700 Series Reading Lamp (R2-D2 Holoprojector) by R2maker
 
I’ll have to check our openR2, I’ve not heard of it before! I’d be printing in resin on my Form2. :)
 
I’ll have to check our openR2, I’ve not heard of it before! I’d be printing in resin on my Form2. :)

Yeah ... the OpenR2 thing is new in 2019 .... there is some stuff already up at OpenR2.

I have a form2 as well! I would love to have contact with other folks using the form2. What I could do is send you the most current STL if you want to give it a try and get a second set of eyes to prove out the print. PM me.
 
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