What thread size these enlargers use on the lens board?

[MattAndre]

Durst M301 questions
I'm guessing smaller than 39mm, so the other question is; are there lensboards which fit these enlargers AND have a 39mm thread? Also, anyone know of a parts source for Durst enlargers? I got this one free but it's missing the bulb cover and the negative tray/carrier. Thanks in advance...

 

[MARTIE]

Durst flat lens boards/panels are named Lapla available in standard 25mm and 39mm thread sizes.
However, in order to print 35mm with a 50mm lens you'll need a recessed lens board.
Durst Siriopla and Siriotub should also fit.

It is possible to find or make 3d printed versions.

 

[MARTIE]

For parts, it will probably be easier and perhaps cheaper to find a second enlarger.

 

[MattKing]

The manual for the M305 (not the M301) says this:
3.1.7 Lens panels
A flat lens panel (12) is supplied with the Durst M 305 to take 50 mm lenses with M39×26 tpi screw thread.
The following lens panels are available separately to order for the 35 mm and 28 mm lenses:
35 mm: NERIOTUB
28 mm: NERIOTUB
Here is that manual: http://www.jollinger.com/photo/cam-coll/manuals/enlargers/durst/Durst_M305.pdf
that link comes from the Jolllinger enlarger (and other things) manual page, found here: http://www.jollinger.com/photo/cam-coll/manuals/manuals.html

 

[MARTIE]

This is from the M601 which is the medium format version and had very similar production dates.

 

[Petrochemist]

The most common size for enlarger lenses is M39, but I also have some in M25 & M42.
Each of these are far enough apart that they can easily be identified.
Enlargers usually have lens boards that allow multiple size lenses to be used.

 

[xkaes]

There are lenses with 32.5mm as well.

 

[Ibicus]

M301 and M305 are very different enlargers, and I don't think they have any compatible parts. Anyway, I have an M301, and a few years ago I replaced the original plate with an M39 so that I could mount a Componon lens. It's neither a Lapla nor a Siriopla; it has another name, which I can't remember it right now. As soon as I pop into the house where it's kept, I can send you a photo if you haven't found it yet.
Regards
Marco

 

[MattKing]

M301 and M305 are very different enlargers, and I don't think they have any compatible parts. Anyway, I have an M301, and a few years ago I replaced the original plate with an M39 so that I could mount a Componon lens. It's neither a Lapla nor a Siriopla; it has another name, which I can't remember it right now. As soon as I pop into the house where it's kept, I can send you a photo if you haven't found it yet.
Regards
Marco

@Ibicus ,
There is easy access on the internet to the manual for the M300. Is it similar to the M301?

 

[MARTIE]

M301 and M305 are very different enlargers, and I don't think they have any compatible parts. Anyway, I have an M301, and a few years ago I replaced the original plate with an M39 so that I could mount a Componon lens. It's neither a Lapla nor a Siriopla; it has another name, which I can't remember it right now. As soon as I pop into the house where it's kept, I can send you a photo if you haven't found it yet.
Regards
Marco

Your absolutely right.

Top left of page 9 in the French manual, NEPLA and NEDOPLA

https://seos.fr/blog/doc/Manuel-Durst-M301.pdf

My apologies for the misinformation.

 

[Ibicus]

@Ibicus ,
There is easy access on the internet to the manual for the M300. Is it similar to the M301?

I've never tried the m300 so I'm not 100% sure, but they look quite the same.

 

[MattKing]

I've never tried the m300 so I'm not 100% sure, but they look quite the same.

Here is a lnk for the manual for the M300, also found on the jollinger site I linked to earlier:
http://www.jollinger.com/photo/cam-coll/manuals/enlargers/durst/Durst_M300.pdf