Expanded Metal Classifier - best design?

[Joel1316]

I should state that even after adding the second sander I still only use one at a time. One is really all that is needed as long as the battery end is connected to the plate.
Something I only discovered after mounting the second sander. But now I have a spare for backup if needed.

Thanks GG!
I have a smaller frame to vibrate, I was hoping just one sander would do the job. Then I wouldn't have to factor in the second sander offsetting the others vibration. Have Harbor Freight coupon in hand

 

Amazon Forum Fav 👍

How to Research for Treasure Hunting and Metal Detecting From Lead Generation to Vetting - Grab it through Amazon!

[Goodyguy]

Thanks GG!
I have a smaller frame to vibrate, I was hoping just one sander would do the job. Then I wouldn't have to factor in the second sander offsetting the others vibration. Have Harbor Freight coupon in hand

Getting the counterbalance's synchronized with each other is tricky and getting them to stay synchronized is impossible with out making a mechanical connection between the two.

Besides, one is plenty as long as everything that needs to be vibrated is rigidly connected together and to where you mount the sander.
I had to add springs to the base to keep the whole thing from walking into the creek

 

[Joel1316]

I need to go to the hardware store to see what kind of springs they have and how I'm going to mount it. I want to get as much vibration as possible.

 

[Goodyguy]

I need to go to the hardware store to see what kind of springs they have and how I'm going to mount it. I want to get as much vibration as possible.

I used discarded valve springs.

 

[Joel1316]

Got the sander from Harbor Freight for less than $7.00 last night. I'm making a battery pack, 10 alkaline AA's should make 15 volts.

 

[TerryC]

Not much of a sacrifice..... they cost 7.95 ea. at Harbor freight without batteries. I just connect them to a 12v deep cycle power chair battery and they will run all day.
The problem is the noise from all the vibrating.

Plus if you are going to run dual sanders the off sets need to be synchronized or else they may balance each other out.
They must also be tied together where the batteries would go as well as being screwed down to the mounting plate.
(unscrew the sanding plates and discard them then use the same screws to mount the sanders through the mounting plate.)


Now you can connect the whole unit to anything that needs severe vibrating.
View attachment 712995View attachment 712996

GG, suggestion.... add a rheostat to one of the sanders to do the syncronizing. TTC