“Top hat” lens board for Crown Graphic?

[pchaplo]

Found.

[Dan Fromm]

No. Which is not to say that one couldn't be made, just that you can't buy a used original issue one.

Edit: I just saw your WTB listing. A 150 mm general purpose lens doesn't need an additional 80 mm of extension on any size of Crown Graphic. I don't know whether to laugh or cry.

[pchaplo]

Just having some fun with a different application. Just For the joy of making and being playful.

[Dan Fromm]

Oh, dear, are you still riding that hobby horse? Make a rigid cover for the bellows.

[Daniel Unkefer]

Here's a suggestion that works for me. Recessed enlarger boards are available cheap on Ebay. Flip it around and you have a "top hat".
I use brass hobby model screws to hold it all together.

https://farm3.staticflickr.com/2626/13174174993_eb5c9787fd_c.jpg (https://flic.kr/p/m5a6fa)001 (https://flic.kr/p/m5a6fa) by Nokton48 (https://www.flickr.com/photos/18134483@N04/), on Flickr

Durst IXOTUB recessed board on the right, unmarked recessed enlarger board on the left.

[pchaplo]

Daniel, thanks — that’s a creative solution and fits my shoestring budget :)

[pchaplo]

I could easily also make a Copal 0 end plate that is removable, for easy mounting!

[domaz]

I've made top-hat lensboards out of thin plywood, you just had to make a extension box and attach it to the lensboard somehow, it's not terribly difficult.

[Daniel Unkefer]

https://farm8.staticflickr.com/7545/27565427293_866303ce8b_b.jpg (https://flic.kr/p/HZS2aP)2016-07-08 06.11.52 (https://flic.kr/p/HZS2aP) by Nokton48 (https://www.flickr.com/photos/18134483@N04/), on Flickr

Another possibility for you, are these anodized screw-together metal tubes (made in China). $20 each they are advertised on Ebay as for "Wista", but I modify mine to fit Plaubel Peco Jr. Nicely made and not too expensive, either. Come in three different lengths, your choice. I have quite a few of these, I keep reordering them as I need them. I lined this tube set with flocking paper from Edmund Scientific.

Shown ^^: 360mm F11 Kern-Arau dialyte on Plaubel Peco Jr board (No; It's not heavy at all. A lightweight set).

You can also see how I trimmed down the original Wista board (also $20) with my power scroll saw and attached that to the Plaubel board, again using teeny tiny modeling brass screws from the local hobby shop.

[pchaplo]

Domaz, that fits my budget and I have a wood shop. Another creative idea! Thanks!

I've made top-hat lensboards out of thin plywood, you just had to make a extension box and attach it to the lensboard somehow, it's not terribly difficult.

[pchaplo]

Daniel, nice craftsmanship and very inventive! Yes! That is what I was thinking: to trim down some other board and attach the salvage remnant to a Crowb board. Did you tap and thread the holes, or drill a pilot and let the screw grip? Or small small screws/bolts with nuts? Knowing exactly what screws yu use would be a great help. Thanks!
https://farm8.staticflickr.com/7545/27565427293_866303ce8b_b.jpg (https://flic.kr/p/HZS2aP)2016-07-08 06.11.52 (https://flic.kr/p/HZS2aP) by Nokton48 (https://www.flickr.com/photos/18134483@N04/), on Flickr

Another possibility for you, are these anodized screw-together metal tubes (made in China). $20 each they are advertised on Ebay as for "Wista", but I modify mine to fit Plaubel Peco Jr. Nicely made and not too expensive, either. Come in three different lengths, your choice. I have quite a few of these, I keep reordering them as I need them. I lined this tube set with flocking paper from Edmund Scientific.

Shown ^^: 360mm F11 Kern-Arau dialyte on Plaubel Peco Jr board (No; It's not heavy at all. A lightweight set).

You can also see how I trimmed down the original Wista board (also $20) with my power scroll saw and attached that to the Plaubel board, again using teeny tiny modeling brass screws from the local hobby shop.

[Daniel Unkefer]

I bought an assortment of sizes, these are all usuable depending on what you are fabricating. Google "hobby modeling screws" and there are plenty of sources.
I use a mini drill press to drill the holes through the cone and the board, then use nuts and screws to hold it all together. I even use some stuff I bought at the local Home Depot in the hardware department. It's not that critical. Flat back spray krylon (sprayed onto a cardboard and applied by brush) is your friend.

Here is one source if you don't have hobby shops in your area: https://www.rtlfasteners.com/

[pchaplo]

Daniel,

Thanks for the additional detail. I love improvising and using found materials, so this approach appeals to me greatly.

I’m now trying to determine how long of a tube I can use and have another thread posing the problem.

Many thanks,
Paul


I bought an assortment of sizes, these are all usuable depending on what you are fabricating. Google "hobby modeling screws" and there are plenty of sources.
I use a mini drill press to drill the holes through the cone and the board, then use nuts and screws to hold it all together. I even use some stuff I bought at the local Home Depot in the hardware department. It's not that critical. Flat back spray krylon (sprayed onto a cardboard and applied by brush) is your friend.

Here is one source if you don't have hobby shops in your area: https://www.rtlfasteners.com/