3D Printing Lens Hoods!

writeb · 04-05-2016, 12:14 PM - **1 Like**

Beefing up on some legacy FF glass, and recently ordered an FA* 28-70 (enroute).
Of course, without the difficult to find (and I'm sure expensive) PH RBC77 lens hood :-/

Q: Does anyone have one (FA* 28-70 PH RBC77 lens hood) in possession that they can provide me more details on? E.g. measurements, bayonet placement, some photos? Long shot, letting me borrow and scan it for precision measurement?

Q: Anyone else out there with more 3d printing (or CAD related) experience I can work with on this?

Provided we can get the specifications dialed in, the possibilities are fantastic for printing awesome (and even specialty) lens hoods and filter holders for our lenses.

I'm going to take a stab at producing a replacement for my DA* 16-50 lens hood (PH-RBJ 77 mm), but would really appreciate if someone can provide me consultation on the FA* 28-70, or just any anecdotes/support on 3d printing stuff for our cameras in general.

mikeSF · 04-05-2016, 01:44 PM

I have the original FF hood as well as a more APSC correct long hood. Am in east contra costa county if you want to borrow it (or both). Contact me offline and we can work something out.
Mike

**Ex Finn.** · 04-05-2016, 04:37 PM

Co-worker is heavy into 3D printing. Latest gear he bought was a some sort of 3D image scanner, for scanning and then printing what he scanned. I must find out more about his progress...

Ole · 04-05-2016, 07:18 PM - **1 Like**

Originally posted by Ex Finn.

Co-worker is heavy into 3D printing. Latest gear he bought was a some sort of 3D image scanner, for scanning and then printing what he scanned. I must find out more about his progress...

While you're at it: The power zoom switch/cover on the side of the lens gets brittle over time, breaks and falls off. If a (non-functioning) replacement could be 3D scanned and then printed that would be truly awesome.

**Ex Finn.** · 04-06-2016, 04:48 PM

Originally posted by Ole

While you're at it: The power zoom switch/cover on the side of the lens gets brittle over time, breaks and falls off. If a (non-functioning) replacement could be 3D scanned and then printed that would be truly awesome.

I`ll check with him and ask how he is progressing with the scanner setup.

Adam · 04-06-2016, 05:25 PM

This could lead to some very promising results- keep us posted!

Kameko · 04-06-2016, 10:35 PM

Originally posted by Ole

While you're at it: The power zoom switch/cover on the side of the lens gets brittle over time, breaks and falls off. If a (non-functioning) replacement could be 3D scanned and then printed that would be truly awesome.

Speaking of.... if you do manage this and can print the PZ switch, I'd be interested in filling that hole in my lens. Electrical tape just doesn't look pretty

slip · 04-07-2016, 03:53 PM

Someone could make a business out of this...

Randy

writeb · 04-11-2016, 01:30 PM

Thanks all for the great responses! Yes, a definite business model exists for this. Some comments regarding my status:

1. I was a little too optimistic on the functionality of my newish 3d scanner. 3d scanning is apparently hard (go figure

), and I definitely wanted to heavily use that method for tolerance and replica considerations. I need more time to tinker with settings to see if I can get a workable scan flow.

2. Laser based scanning is thrown off by slightly reflective surfaces, so I'm working through how to temporarily 'matte' the surfaces of scannable items to reduce image noise.

3. The bayonet mounts on the FA* lenses at least are fairly complex. I think, primarily, because they build them so they can be reversed. Initial prototypes will more than likely just fit in a one-way fashion.

4. PZ Switch, I'll take a peek (expecting to receive lens today finally) but have to admit being squeamish at the concept of popping off any switch, particularly given that they're prone to fail. I can't make promises on that one quite yet :-/

**K6-III** · 07-07-2016, 06:33 PM

Did anything come of this 3d-printed hood exercise?

angerdan · 12-08-2018, 10:24 AM

Originally posted by writeb

I need more time to tinker with settings to see if I can get a workable scan flow.
PZ Switch, I'll take a peek. I can't make promises on that one quite yet :-/

Any further updates yet?

writeb · 12-12-2018, 11:56 AM - **1 Like**

Unfortunately not. My integrated 3D scanner was a bust, and being a glutton for punishment, I bought into another crowdsourced campaign - this time for a dedicated 3D scanner which was a good 1.5 years in the making. They finally shipped it and I've never even set it up - for lack of reasonable Android support. So, no, I haven't been able to pursue this. The biggest constraint is just getting the dimensions and tolerances locked in. Someone with access to an amazing 3D scanner and/or strong CAD-fu needs to advise on this.

04-05-2016, 12:14 PM - 1 Like	#1
writeb Senior Member Join Date: Nov 2009 Location: San Jose Photos: Gallery \| Albums Posts: 150	3D Printing Lens Hoods! Beefing up on some legacy FF glass, and recently ordered an FA* 28-70 (enroute). Of course, without the difficult to find (and I'm sure expensive) PH RBC77 lens hood :-/ Q: Does anyone have one (FA* 28-70 PH RBC77 lens hood) in possession that they can provide me more details on? E.g. measurements, bayonet placement, some photos? Long shot, letting me borrow and scan it for precision measurement? Q: Anyone else out there with more 3d printing (or CAD related) experience I can work with on this? Provided we can get the specifications dialed in, the possibilities are fantastic for printing awesome (and even specialty) lens hoods and filter holders for our lenses. I'm going to take a stab at producing a replacement for my DA* 16-50 lens hood (PH-RBJ 77 mm), but would really appreciate if someone can provide me consultation on the FA* 28-70, or just any anecdotes/support on 3d printing stuff for our cameras in general.

04-06-2016, 05:25 PM	#6
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,593	This could lead to some very promising results- keep us posted! Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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04-05-2016, 01:44 PM	#2
mikeSF Pentaxian Join Date: Jan 2009 Location: East Bay Area, CA Photos: Gallery Posts: 6,620	I have the original FF hood as well as a more APSC correct long hood. Am in east contra costa county if you want to borrow it (or both). Contact me offline and we can work something out. Mike

04-05-2016, 04:37 PM	#3
Ex Finn. Site Supporter Join Date: Nov 2007 Location: Southern Maryland. Espoo. Kouvola. Photos: Gallery \| Albums Posts: 7,975	Co-worker is heavy into 3D printing. Latest gear he bought was a some sort of 3D image scanner, for scanning and then printing what he scanned. I must find out more about his progress...

04-05-2016, 07:18 PM - 1 Like	#4
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,408	Originally posted by Ex Finn. Co-worker is heavy into 3D printing. Latest gear he bought was a some sort of 3D image scanner, for scanning and then printing what he scanned. I must find out more about his progress... While you're at it: The power zoom switch/cover on the side of the lens gets brittle over time, breaks and falls off. If a (non-functioning) replacement could be 3D scanned and then printed that would be truly awesome.

04-06-2016, 04:48 PM	#5
Ex Finn. Site Supporter Join Date: Nov 2007 Location: Southern Maryland. Espoo. Kouvola. Photos: Gallery \| Albums Posts: 7,975	Originally posted by Ole While you're at it: The power zoom switch/cover on the side of the lens gets brittle over time, breaks and falls off. If a (non-functioning) replacement could be 3D scanned and then printed that would be truly awesome. I`ll check with him and ask how he is progressing with the scanner setup.

04-06-2016, 10:35 PM	#7
Kameko Veteran Member Join Date: May 2012 Location: White Rock Photos: Albums Posts: 450	Originally posted by Ole While you're at it: The power zoom switch/cover on the side of the lens gets brittle over time, breaks and falls off. If a (non-functioning) replacement could be 3D scanned and then printed that would be truly awesome. Speaking of.... if you do manage this and can print the PZ switch, I'd be interested in filling that hole in my lens. Electrical tape just doesn't look pretty

04-07-2016, 03:53 PM	#8
slip Veteran Member Join Date: Oct 2006 Location: 2 hours north of toronto ontario canada Photos: Gallery \| Albums Posts: 3,535	Someone could make a business out of this... Randy

04-11-2016, 01:30 PM	#9
writeb Senior Member Join Date: Nov 2009 Location: San Jose Photos: Gallery \| Albums Posts: 150 Original Poster	Thanks all for the great responses! Yes, a definite business model exists for this. Some comments regarding my status: 1. I was a little too optimistic on the functionality of my newish 3d scanner. 3d scanning is apparently hard (go figure ), and I definitely wanted to heavily use that method for tolerance and replica considerations. I need more time to tinker with settings to see if I can get a workable scan flow. 2. Laser based scanning is thrown off by slightly reflective surfaces, so I'm working through how to temporarily 'matte' the surfaces of scannable items to reduce image noise. 3. The bayonet mounts on the FA* lenses at least are fairly complex. I think, primarily, because they build them so they can be reversed. Initial prototypes will more than likely just fit in a one-way fashion. 4. PZ Switch, I'll take a peek (expecting to receive lens today finally) but have to admit being squeamish at the concept of popping off any switch, particularly given that they're prone to fail. I can't make promises on that one quite yet :-/

07-07-2016, 06:33 PM	#10
K6-III Site Supporter Join Date: Apr 2010 Location: Montreal Posts: 222	Did anything come of this 3d-printed hood exercise?

12-08-2018, 10:24 AM	#11
angerdan Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 2,639	Originally posted by writeb I need more time to tinker with settings to see if I can get a workable scan flow. PZ Switch, I'll take a peek. I can't make promises on that one quite yet :-/ Any further updates yet?

12-12-2018, 11:56 AM - 1 Like	#12
writeb Senior Member Join Date: Nov 2009 Location: San Jose Photos: Gallery \| Albums Posts: 150 Original Poster	Unfortunately not. My integrated 3D scanner was a bust, and being a glutton for punishment, I bought into another crowdsourced campaign - this time for a dedicated 3D scanner which was a good 1.5 years in the making. They finally shipped it and I've never even set it up - for lack of reasonable Android support. So, no, I haven't been able to pursue this. The biggest constraint is just getting the dimensions and tolerances locked in. Someone with access to an amazing 3D scanner and/or strong CAD-fu needs to advise on this.

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