[Lab] protein jar tumblers

[mike Jans]

If you used a flat head screw and pre-drilled the hole, you should be able to have the screw flush with the outside of the jar. That'll of course only be an option if the jar is thick enough to have material removed without compromising its strength too much. The agitators would then also have to be bulky enough to accommodate screws. I can't tell how big this thing is from the photo, but thin fins and solvent will give you more room for rocks.

Date: Sun, 3 Jul 2011 17:13:17 -0400
From: krazatchu at hotmail.com
To: lab at artengine.ca
Subject: Re: [Lab] protein jar tumblers



  


    
  
  
    You should be able to determine the plastic type from the recycling
    code on the bottom....

    http://en.wikipedia.org/wiki/Resin_identification_code

    

    Once you know the plastic, you can confidently select a solvent for
    attaching fins... 

    Just make sure your fins are of the same material or compatible to
    the solvent...

    

    PVC and ABS solvents are widely available (Canadian Tire)  for use
    with pipe....

    

    Michael

    

    http://krazatchu.ca/

    http://nomidesign.net/

    

    On 7/3/2011 4:47 PM, Darcy Whyte wrote:
    
      Um, because water is involved, I'm a bit concerned about screwing
      through it. 
      
        
          

          
        
        Also, by doing something that interferes with the outside
          roundness of the jar, it might not roll on the tumbler.
        

        
        I'm not dismissing it. It sounds better the more I think of
          it but it still requires the right solvent to seal it up...
        

        

        On Sun, Jul 3, 2011 at 4:40 PM, mike
          Jans <mjans at live.com>
          wrote:

          
            
              
                Do you think the jar is tough enough to screw through?
                If so, you could press the agitators against the inside
                of the drum and screw into them from the outside.

                

                
                  From: darcy at siteware.com

                  Date: Sun, 3 Jul 2011 13:24:09 -0400

                  To: lab at artengine.ca

                  Subject: [Lab] protein jar tumblers
                  
                    

                      

                      
                        I finally found some empty plastic protein
                          jars to use for my rock tumbling project. They
                          are large (like a gallon) and they have a wide
                          mouth. The plastic is very tough so I think
                          they will be okay as rock tumblers. They may
                          be made of vinyl I'm not sure.  
                      
                      

                      Anyways, any ideas of how to install rubs
                        inside them so the rocks don't just slide
                        inside?
                      

                      
                      I'm just a little concerned that it will be
                        hard to glue unless I can find the right
                        solvent.
                      

                      
                      One thing I thought of is to add a disk
                        underneath the lid. So when you go to add the
                        lid (like a peanut jar lid), you first put down
                        a disk as if it were a seal. The lid would go
                        over top of this disk and hold it in place. 
                      

                      
                      Then the disk could have some agitators
                        attached to it so that as the assembly turns the
                        agitators rotate inside the container and make
                        sure the stones don't slide.
                      

                      
                      Any thoughts?
                      

                      
                      http://mambohead.com/2011/06/rock-tumbler-first-run/
                      

                      
                      

                    
                  
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