small tank vibrator

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JSER

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Jeremy
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I am trying to find a vibrator, once you were able to get them to stand film dev tanks on rather than turning them upside down, it also reduced development times, does anyone remember them from about 30 years back.

They were about half the depth of a Patterson one reel tank and ran on batteries.

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Regards
 
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Could you not strap a small battery powered electric motor with an eccentric cam to the side of a Patterson tank?
 
Not sure I'd want to try that on adox CHS25... would probably strip the emulsion off in about 30 seconds. One for the more robust films tbh.
 
Woodsy said:
Not sure I'd want to try that on adox CHS25... would probably strip the emulsion off in about 30 seconds. One for the more robust films tbh.
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:thumbs: Lucky 100 is even worse, no wonder it sells for £2 a roll
 
I'm not sure I should be replying in this thread as I have no real idea, but I have an urge to share this....couldn't a simple and cheap vibrating toothbrush create the same? If you needed more vibration, you could do worse that a proper 'lady' vibrator? I'd say the purse size would ample...I think?! :thumbs:
 
elphesadente said:
I'm not sure I should be replying in this thread as I have no real idea, but I have an urge to share this....couldn't a simple and cheap vibrating toothbrush create the same? If you needed more vibration, you could do worse that a proper 'lady' vibrator? I'd say the purse size would ample...I think?! :thumbs:
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As for the toothbrush, not a bad idea that shop.... does them for £5.

As for the other, no probs, you go in and get it for me :D
 
Alastair said:
Could you not strap a small battery powered electric motor with an eccentric cam to the side of a Patterson tank?
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Actually thanks, a small 6v motor with a small off centre attachment may well do the trick if placed inside a 35mm film cannister in empty CD 50 set plastic case filled with sand.

Stand the dev tank on top and it may do it.

Thanks will try that.
 
elphesadente said:
I'm not sure I should be replying in this thread as I have no real idea, but I have an urge to share this....couldn't a simple and cheap vibrating toothbrush create the same? If you needed more vibration, you could do worse that a proper 'lady' vibrator? I'd say the purse size would ample...I think?! :thumbs:
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hell, you're just saying what everyone else was thinking.
reply away..:lol:


That aside, I've often thought there ought to be a timed rotating cradle of some kind, that once programmed would do all the inverting at the required time intervals, that was when I was using a 500ml tank.
These days I have a 5 reel tank, its enormous, the cradle would be half the size of the darkroom....


*orders 2ft Black Mamba & 1000 pp3's*
 
joxby said:
hell, you're just saying what everyone else was thinking.
reply away..:lol:


That aside, I've often thought there ought to be a timed rotating cradle of some kind, that once programmed would do all the inverting at the required time intervals, that was when I was using a 500ml tank.
These days I have a 5 reel tank, its enormous, the cradle would be half the size of the darkroom....


*orders 2ft Black Mamba & 1000 pp3's*
Click to expand...

There were, in fact when people could not afford them we used to make them, today even easier.

Take a look here

http://www.ebay.co.uk/itm/3-DEVELOP...raphy_DarkroomSupplies_SM&hash=item2568750ccb

We used to get a piece of large u shaped gutter, these days inlay with a large piece of 1mm PTFE sheet £6 on cheapbay, place the gutter on three shaped pieces of balsa wood, one each end one in middle and get a small 12v motor with a vacuum cleaner belt, gearing for a few pence from a model shop slows it down to 1 revolution about every 5 seconds.

The Patterson lids on the tanks are grooved so no slippage. We used to use rubber bands as they grip without being tight, fine on 1 to three size tanks, though you would have to have better engineering for a "large" tank
 
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JSER said:
I am trying to find a vibrator, once you were able to get them to stand film dev tanks on rather than turning them upside down, it also reduced development times, does anyone remember them from about 30 years back.

They were about half the depth of a Patterson one reel tank and ran on batteries.

Image1-1.jpg


Regards
Click to expand...
That sounds like homoeopathy to me. I'm no fluid physicist, but to my knowledge ultrasonic agitation causes only focal vibrations and widespread mixing per se. I hope it doesn't lift your emulsion off the celluloid.

I'm all eager to hear your report though :)

edit: not any 'vibrator' will give you ultrasonic. That requires quite high frequencies beyond 20kHz
 
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