3D printed replicas of lenshoods for the Nikon Rangefinders lenses 2.8cm; 3.5 cm and 13.5 cm

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Alpsman

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Continuation from "Christian.H2003"s thread about the replicas of lenshoods.

Thanx to "drsdwoodgate" who suggested me making some more lenshoods I will continue.
He supported me with measurements of lenshoods I dont own by myself.

>>>>
The 2.8cm f3.5 hood has a diameter of 70mm and a width of about 20.5mm including the threads [ie. all of it]. It's actually two rings. The bottom ring with the threads is 56.85mm diameter and width of 8mm.

The 13.5cm hood is a diameter of 55.5mm and a length of 41mm.

And now found the 3.5cm f2.5 hood which has a diameter of 66mm and a height of 25mmm.
<<<<<<<<

Furthermore I found the diameters of the threads & piches.

I browsed Mr. Rotolonis book.
According to his book
the thread diameter for the 28/3,5 is 43 mm
the thread diameter for the 35/2,5 is 43 mm
the thread diameter for the 135/4 is 40,5 mm
aaand the thread diameter for the 135/3,5 is 43 mm.

According to "Jonmanjiro" the 43mm thread should have a pitch of 0,5 mm

Browsing through my ongrowing model database I found out, that I've already made th lenshood for the 50mm which have a 43 x 0,5 thread.
at least this on I know will work.

Next step:
I'll deign a test piece with a 40,5 x 0,5 mm thread
for which I need a fearless, patient and brave testprinter who not only will have or have access to a printer but also will own a 13.5 / f4 lens.

All other with a 43 x 0,5 mm thread can be designed.

Greetings: Dieter
 
splitimageview said:
@Alpsman what material or type of print will work with your designs? Can they be printed in PA Nylon 12 and SLS?
Click to expand...
For the lenshoods I printed for myself I use eithe PLA or PETG. Depends on what is loaded in the printer.
PETG is a little more elastic than PLA.
PLA deforms at around 50 to 60°C, PETG will stand 10°C more.

The part with the thread should be printed with the lowes possible layerhight.
Consider: the thread has a pitch of 0,75 or 0,5 mm.
Ordinars layerhight is 0,2 mm
(After the first part, I was surprised myself that it worked.)

Depending on used printer and used filament the thread MIGHT be to loose or to tight. But must not.
Also it is important to check the thread for thick seams. Those mus be removed with a fine triangular file. Otherwise the thread wont thread into the thread on the lens.

As far as I can remember, someone printed one in ABS (?) and somebody out of aluminum.
 
splitimageview said:
@Alpsman what material or type of print will work with your designs? Can they be printed in PA Nylon 12 and SLS?
Click to expand...
I forgot:
Ya can feed the *.stl file into any printer or upload to a printer service.
The question is, will the dimensions be exactly the same it the are printed in plasic or in aluminum.
The threads are very, very fine.
But I can remeber that somebody printed my eye piece correction lens holder via a printing service on the internet for the S2 in Aluminum and the M19 x 0,75 mm thread for the lens worked.
 
splitimageview said:
@Alpsman what material or type of print will work with your designs? Can they be printed in PA Nylon 12 and SLS?
Click to expand...
I think any material should be fine, have made lenshoods in black PLA (PLA+ lately) and they work fine
The main advantage is that PLA is soft and threads dont need to be perfect out of printer
The disavantage is that PLA is soft, and threads can break
 
titrisol said:
I think any material should be fine, have made lenshoods in black PLA (PLA+ lately) and they work fine
The main advantage is that PLA is soft and threads dont need to be perfect out of printer
The disavantage is that PLA is soft, and threads can break
Click to expand...
If the walls are thin, and the walls of the printed hoods are thin, the hood can easyly be elasticly deformed if ya grip it to hard with your fingers. That will be enough that the thread will jam and dont move any further. Loosen your grip and it will turn easier.
To avoid jamming, place the hood - if possible - in the palm of your hand an turn it. Or place it on a flat piece of rubber.
Also, if the thread turns "hard" or squeaks, "grease" the thread with graphite, or "paint" it with a soft pencil.
Screw it on and off a few times and it will "run in".
 
@ drsdwoodgate:
Lenshood for 13,5 / f3,5: first shot

Here the dropbox link for the first test file.

Dropbox

www.dropbox.com www.dropbox.com

I assume, that the length of 41 mm is without the thread?
right / wrong ?

the diameter of 55,5 mm is the outer diameter?
again right / wrong?

Anyway.
I've made the hood with a length of 41 mm and the thread with a length of 3 mm.
So the total length is 44 mm

Is the thread to long or does it screw completely into the thread of the lens?

The thread is the same I used on the hood for the 50mm lens and it fits at least on my lens.

The hood can be printed without supports when placed with the large diameter on the printbed and with the thread pointing upwards.
And print the part with the thread with the lowest possible layerhight.

Please make a print and test it on your lens.
Tell me if it needs to be longer / shorter / smaller / larger / fits / fits not / throw it away / keep it or whatsoever.

Greetings from 🇦🇹

PS: of course, anyone else with a 13,5 / f3,5 RF lens and a printer is invited to make a testprint ;-)
 
 
Alpsman said:
@ drsdwoodgate:
Lenshood for 13,5 / f3,5: first shot

Here the dropbox link for the first test file.

Dropbox

www.dropbox.com www.dropbox.com

I assume, that the length of 41 mm is without the thread?
right / wrong ?

the diameter of 55,5 mm is the outer diameter?
again right / wrong?

Anyway.
I've made the hood with a length of 41 mm and the thread with a length of 3 mm.
So the total length is 44 mm

Is the thread to long or does it screw completely into the thread of the lens?

The thread is the same I used on the hood for the 50mm lens and it fits at least on my lens.

The hood can be printed without supports when placed with the large diameter on the printbed and with the thread pointing upwards.
And print the part with the thread with the lowest possible layerhight.

Please make a print and test it on your lens.
Tell me if it needs to be longer / shorter / smaller / larger / fits / fits not / throw it away / keep it or whatsoever.

Greetings from 🇦🇹

PS: of course, anyone else with a 13,5 / f3,5 RF lens and a printer is invited to make a testprint ;-)
Click to expand...
Thanks this looks right. Thank you! I printed at a friends who is out of town so it will take time for me to print it and check.
Alpsman said:
Just found some printable parts for the Rangefinder.
A lenshood for the 3.5 cm f 2.5 and f 3.5 already exists.


He also made some caps and a hood for the 3.5 f 1.8




Click to expand...
The 43mm lens hood above doesn't work at least on my 3.5cm f2.5 because mine is the black version (late) perhaps? I have it printed and the problem is the following. That hood has two circles at the bottom but the outer circle sits directly on top of the silver aperture ring and does not fit between the aperture ring and the name plate like it appears to do in the 43mm f3.5 in his prints.
 

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drsdwoodgate said:
Thanks this looks right. Thank you! I printed at a friends who is out of town so it will take time for me to print it and check.
Click to expand...
Good evening!

Yep - thats life. I have RF lenses fron 12 mm up to 105 and two printers.
But no 13,5 cm . . . .
Anyway.
First about the hood for the 13,5 / f3,5
We are not in a hurry. At least not me ;-)
As mentioned, check if the thread is not to long.
Then: check for vignetting.
Mount the hood, open the aperture and look from behind at an angle through the lens.
Can you see the rim of the hood?
It might helt to stick a piece of white tape onto the inside.
If ya cant see the rim of the hood, everything is OK.
If you can see the rim of the hood I have either to enlarge the diameter or to shorten the length.
Until now we did not start mass production ;-)
 
drsdwoodgate said:
The 43mm lens hood above doesn't work at least on my 3.5cm f2.5 because mine is the black version (late) perhaps? I have it printed and the problem is the following. That hood has two circles at the bottom but the outer circle sits directly on top of the silver aperture ring and does not fit between the aperture ring and the name plate like it appears to do in the 43mm f3.5 in his prints.
Click to expand...
Second, the hood for the 3,5 cm / f 2,5:

OK.
Then theoretically I just need to design a hood just like his but without the outer rim/circle at the rear.
 
drsdwoodgate said:
Thanks this looks right. Thank you! I printed at a friends who is out of town so it will take time for me to print it and check.

The 43mm lens hood above doesn't work at least on my 3.5cm f2.5 because mine is the black version (late) perhaps? I have it printed and the problem is the following. That hood has two circles at the bottom but the outer circle sits directly on top of the silver aperture ring and does not fit between the aperture ring and the name plate like it appears to do in the 43mm f3.5 in his prints.
Click to expand...

Hi! Please read the descriptions in my printables pages. As noted, that lens hood is designed for the earlier more common versions of the 3.5cm f/2.5. You have the late version which is identical to the barrel of the 3.5cm f/1.8, with a 43mm inner filter thread and 48mm outer hood thread. My hood design for the 3.5cm f/1.8 (or Alpsman’s) will fit your lens perfectly. Please let me know if you run into any issues!
 
keytarjunkie said:
Hi! Please read the descriptions in my printables pages. As noted, that lens hood is designed for the earlier more common versions of the 3.5cm f/2.5. You have the late version which is identical to the barrel of the 3.5cm f/1.8, with a 43mm inner filter thread and 48mm outer hood thread. My hood design for the 3.5cm f/1.8 (or Alpsman’s) will fit your lens perfectly. Please let me know if you run into any issues!
Click to expand...
Wouldnt it be boring if there is only one 3,5 cm lens?

So if the hood for the 1.8 will fit, then there are 11 different designs.

two from keytarjunkie with additional filter thread

and nine form me without additional filter thread.

the choice is yours :-D

By the way, I've seen ya made a rear cap for the 2,1 cm lens - WOW !!!
 
Alpsman said:
Wouldnt it be boring if there is only one 3,5 cm lens?

So if the hood for the 1.8 will fit, then there are 11 different designs.

two from keytarjunkie with additional filter thread

and nine form me without additional filter thread.

the choice is yours :-D

By the way, I've seen ya made a rear cap for the 2,1 cm lens - WOW !!!
Click to expand...

Thanks, yeah, I bought a cheap 2.1cm f/4 F mount lens without a rear cap and it was bothering me!

I'm working on several other hoods to be published soon - Micro-Nikkor 5cm f/3.5, 8.5cm f/2 with an internal 43mm filter thread and reversible stowaway design, maybe even a Nikon S3/S4/SP body grip. I like yours but I want to make one with the design language of the F36 grip.
 
keytarjunkie said:
Thanks, yeah, I bought a cheap 2.1cm f/4 F mount lens without a rear cap and it was bothering me!

I'm working on several other hoods to be published soon - Micro-Nikkor 5cm f/3.5, 8.5cm f/2 with an internal 43mm filter thread and reversible stowaway design, maybe even a Nikon S3/S4/SP body grip. I like yours but I want to make one with the design language of the F36 grip.
Click to expand...
Oh ya poor boy. Were you forced by the low price to buy the 2,1 cm lens 🤣 🤣
Life is so hard.

Well I dont need the cap, I have no 2,1 cm. (I have the Biogon 21mm) But I'll print it some day to see if it fits my Voigtländer 12 & 15 mm lenses. Your cap looks very similar to them.

My grip for the RF was just a kinda experimental modell. I myself dont use it, because for changing the film I have to unmount the grip, then the back and then at last I can change the film.
I haven't yet come up with a way to design it so that the handle doesn't have to be removed when taking off the back panel.

Perhaps you have an solution.
 
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