Jobo 3010 Expert Drum and B's Processor

[younghoon Kil]

I've had a lot of streaking, mottling, and edge density problems so far.
In the meantime, I learned how to use Jobo Expert Drum and Motor Base in this forum.
I made a drum supporting device like this.
And I developed several times with XTOL, and the scenes with a lot of clean skies were developed very evenly.
I got a lot of information from this forum. thank you!

p.s. When the 3010 drum is filled with 600mL solution and turned on with the original 12V/1A power adapter, the speed in one direction is about 20rpm and the speed in both directions(2 forward rotations, 2 reverse rotations) is about 18.5rpm.

[younghoon Kil]

Loc-line coolant hose works well for this, the hose can be bent into any shape you want. They sell inline valves for the hose, and can be easily adapted to a funnel. I made a stand out of a few Schedule 40 parts and a piece of 1/4" Lexan.

I also made a flexible funnel stand according to the picture above link.
Thank you for your idea and advice.

[Michael R]

That second device is the part of the “system” usually missing when people put expert drums on their own rotation devices.

I also made a flexible funnel stand according to the picture above link.
Thank you for your idea and advice.

[younghoon Kil]

Yes, flexible funnel is invaluable device.

[joelio]

This is fascinating - wow. Would you mind sharing more re your process designing this? Thanks.

[Vaughn]

Very cool!

[Greg]

I also made a flexible funnel stand according to the picture above link.
Thank you for your idea and advice.

A while back I rigged up a similar tank filling device.
1. Having the handle to the funnel is a great idea since I had to use a round wire funnel holder and the funnel was only held in place initially by gravity and it easily moved when adding liquid to it.
2. I found that the end of the tube going into the tank had to be cut at a downward angle with the hose entering the tank horizontally. If the hose was cut at a right angle, the liquid would easily overflow. Probably has also something to do with the I.D.. of the hose used.

In the end I went back to filling and emptying the JOBO manually as I have always done since the early 1970s... old habits die hard.

[Ari]

I've had a lot of streaking, mottling, and edge density problems so far.
In the meantime, I learned how to use Jobo Expert Drum and Motor Base in this forum.
I made a drum supporting device like this.
And I developed several times with XTOL, and the scenes with a lot of clean skies were developed very evenly.
I got a lot of information from this forum. thank you!

p.s. When the 3010 drum is filled with 600mL solution and turned on with the original 12V/1A power adapter, the speed in one direction is about 20rpm and the speed in both directions(2 forward rotations, 2 reverse rotations) is about 18.5rpm.

How do you like the B's Processor?
I was considering getting one as a back-up or travel base since it's much smaller than my Simma-Roller.

[younghoon Kil]

This is fascinating - wow. Would you mind sharing more re your process designing this? Thanks.

[Flexible funnel stand]
- AirTurn goSTAND Portable Microphone Stand: https://www.bhphotovideo.com/c/produ...one_stand.html

- 9.SOLUTIONS Savior Clamp Mini: https://www.bhphotovideo.com/c/produ...lamp_mini.html
- 9.SOLUTIONS Quick Mount for Large Camera: https://www.bhphotovideo.com/c/produ...for_large.html
- 9.SOLUTIONS Quick Mount Receiver to Screw-On Plate: https://www.bhphotovideo.com/c/produ...ceiver_to.html
# The funnel can be easily attached and detached with these 9.SOLUTIONS devices.

- Hopkins FloTool 10704 Measu-Funnel with On/Off Spout: https://www.amazon.com/dp/B000EH4V0Y
- 3/8" Barb to 1/2" Male Thread White Adapter: https://www.amazon.com/dp/B083WP631W
# Use a heat gun to insert the barbed fitting into the blue spout of the funnel.

- Loc-Line 32093 Coolant Hose Valve, 1/2" Hose ID, 1/2" NPT Female: https://www.amazon.com/dp/B00065UGJO?th=1
- Loc-Line 50813 Coolant Hose Assembly Kit, 1/2": https://www.amazon.com/dp/B006R9OFGS

When 600mL of solution is poured into the rotating drum, it is injected in 13.5 seconds. The more the Loc-Line 32093 valve is opened, the solution is injected faster, but the solution overflows.


[Drum supporting device]
- B's Processor: https://www.bounetphoto.com/bounet-shop/processor-new
- Aluminum Worktable: https://www.aliexpress.com/item/1005003661986195.html
# The screw holes are M6.
# However, an Aluminum Worktable is not absolutely necessary.

- Furniture Adjustable Feet: https://www.aliexpress.com/item/4001184672773.html
# The screw is M6.

- Reusable Fastening Black Cable Straps: https://www.amazon.com/gp/product/B06WVCGC37/
# Straps for securing the B's Processor.

- T-type Level: https://www.aliexpress.com/item/32544361056.html
- M6 screws: https://www.aliexpress.com/item/10000150053486.html

- Haoge 90 Degree Double Quick Release Clamp: https://www.aliexpress.com/item/1005001646600443.html
- Sunwayfoto Y-Type Lens Support: https://www.bhphotovideo.com/c/produ...s_Support.html
# The empty drum is slightly rattled when changing the direction of rotation. I thought this Y-Support would help, but I don't really need it. When the drum is filled with solution, the drum rotates stably.

- Desmond DLY Lens Yoke Support: https://www.amazon.com/gp/product/B01IZ85ORW
# Anyway, Sunwayfoto's wheels are not rubber.

- BongoTies: https://www.bhphotovideo.com/c/produ..._green_10.html
# Anyway, you don't need 90 Degree Double Quick Release Clamp, Y-Support, and BongoTies.

# A thick rubber band must be wrapped around both sides of the drum so that the drum does not come off.

[younghoon Kil]

How do you like the B's Processor?
I was considering getting one as a back-up or travel base since it's much smaller than my Simma-Roller.

- As I wrote above, empty drum(big drum!) rattle a bit when changing direction of rotation. However, when the drum is filled with solution, it rotates stably.

- If you use an adjustable AC/DC adapter, you can speed up the rotation a bit. B's Processor developer said 15V max would be fine.

https://www.aliexpress.com/item/32959494100.html
I tested the output of this adapter with a multimeter.
11.9-12V → 11.91-11.92V
13V → 12.9V
14V → 13.87V
15V → 14.89V
16V → 15.91V
17V → 16.84-16.85V
# The measured voltage of the 12V/1A adapter of B’s processor is 12.32-12.34V.

- B's Processor offers three speeds. When the drum is filled with 600 mL of solution, the bi-directional(2 forward rotations, 2 reverse rotations) speed of Mode 1 is approximately 8.5 rpm, Mode 2 is approximately 5.5 rpm, and Mode 3 is approximately 18.5 rpm.

- If the drum is filled with 2,800 mL of solution and turned on Mode 3, it takes about 3.5 seconds to complete one revolution.

- Of course, you can use the B's Processor in one direction as well. It speeds up a little.