Not sure - sounds like some form of chemical reaction/oxidative process going on. Sometime, dissimilar metals produce what's called galvanic corrosion.

It depends what you're trying to clean off of the silver, and how many little nooks & crannies your work piece has. This polisher is abrasive (like sand in the desert). It leaves a frosted finish, and cleans off casting mold investment really well.

If using a very lite/small pin - it's very gentle, however you can use heavy gauge pins and get a more aggressive abrasion.

Look at the description for all part numbers and vendors where you can buy the parts. Hope this helps.

Hello! And thx for watching this old video.. back in the day, you could buy the aluminum right off ebay.. it's 8020 aluminum, and now you can buy directly from them. Hope this helps.

Yep, you got it. Water with a tiny few drops of detergent, and let the magic happen.

Sorry for the delay in seeing your message/question - yes, you are correct, the switch you see is to select CW or CCW rotation. Thanks for checking out my video.

Sorry pal! Been there and done that before.

LOL, you're awesome! Thx

Thanks for noticing! Ive found that this arrangement works best for this size polisher.

Thank you!

Probably not the best method for that. A vibratory tumbler with ceramic/porcelain beads would probably do a lot better.

Hey man! I never got a notice about this message. Thanks for checking out the video man - these were wall mounts for a 150" movie screen - which worked great, and now movie night has new meaning! :) Shop tour is always available to you.

Thanks! for watching my video.

$150 to $200 USD

Thanks for comment!

Thanks for watching!

Thanks for asking - and I wish I had the time to build them - unfortunately I don't. :)

I would certainly like to sell you one, but I don't have the time to build one. Sorry.

Thanks for your comment, and yes - in fact that's how I use it, with soap and water - works terrific for cleaning small pieces and parts.

I would certainly love to make a video on that.. I've since built a much larger CNC router, and the controller for that is twice as nice as my controller you see in these videos. I learned a lot from building the first and was able to clean up a few things. I'll maybe try and put out a simple video showing how to put together a basic controller box, and reference my two boxes as examples. Thanks again for your interest Paul, and if you have any specific questions, let me know.

Brian Wisotzkey your welcome brian, i really like your cnc machine and controller. Do you have a schematic for your Current/Volts display on the box if you will, i would love to do that on mine. It’s awesome! And thank you for posting video. Good job! Can’t wait for the controller video build off👍🏽

Hello Paul - and thanks for checking out my videos, and your interest. Yeh - my driver box was my first project in the CNC world. I built that for my small Taig mill. My mill has NEMA23 8-wire stepper motors, and I used the Gecko G540 motor controller/driver module. That chassis you see in my video holds that G540 controller, as well as the power supply. I included several ports/connectors on the front panel, so I could plug the motors in easily. The box also has a few relays in it - they allow me within software/G-code to turn on&off the spindle, or a shop-vac/coolant, etc. I have a cooling fan installed, as well as the "blue" colored panel meters for measuring how much current the motors/machine is drawing, and at what voltage. If you have any specific questions, don't hesitate to ask, I'll do my best to help you. Thanks again.

¡Gracias por ver mi video, y de nada!

Thanks!

Hey and thanks for your inquiry - I'm guessing you'll be using an induction motor, something similar to a table saw motor or such. I think I'd tend to go with the 1450rpm, because if you go with a heavier media, starting the motor might become a more violent event. Haven't done the calculations to watts, but for the treadmill motors (i.e. 90VDC motor), one wouldn't need more than a 1/4 HP, and in my case I just used what I could find the best deal on, which turned out to be 1/3 HP. You'll have to let me know how your project turns out with the constant speed motor.

Hello and thank you for watching. :)

Lol - thanks for the compliment!

Hey! and thanks for the nice comments - it's appreciated.. For your reloading brass, are you tumbling, or magnetic polishing? I've got a very large vibratory tumbler for my brass, and I typically use corn with that - I have not tried magnetic polisher for in cleaning my brass though,,, maybe something for me to play with. :)

Hi, I'm using a "wet method" of tumbling my brass. Rotating bucket attached to a geared 30 RPM motor. In the bucket are stainless steel magnetic pins to clean the brass along with dial soap & LemiShine to remove any water spots on the brass. I generally tumble about 250+ pieces of brass for around 3-4 hours. Rinse, separate the SS media pins and then go about my reloading process. Dry media using corn cobs or walnut hull bits will do an OK job but wet tumbling does a fantastic job & the brass case & primer pockets come out amazing. I built my tumbler including acquiring the motor for under $75, its crude but works and the results speak for themselves.

Thanks man!

parker benz actually, there are reasons why I used extruded aluminum. beyond the simplicity, I like working with alum. and believe it or not premium pine lumber from Home depot would have almost cost the same. all other reasons aside, I wanted to be able to adjust the motor position relative to the platform, and the alum. profile/t-nut configuration helps make that simple task easier.

Brian Wisotzkey didnt know the cost was comparable to lumber. I can agree that it is very fun to work with, and quite easy to work with if you have the right tools.

Thanks for your interest and comments - there's probably 1/2 dozen ways to build this machine, and one way is probably just as good as all the others. I'm also sort of addicted to the 8020 alum. extrusions. :)

Brian Wisotzkey yeah, I can see why, there are just soo many uses for it, ive always thought of it being a little expensive, but tbh have never looked up prices for it!

Davy! That's fantastic - quite a cost savings also.. Love the simplicity of your design and use of standard around the shop left-overs. :) By the way, I couldn't help noticing a pretty nice induction coil/heater on your workbench in the background. I've been toying with the idea, to build myself one of those too. Great minds think alike.. definitely keep me posted on your polisher - lookin good!

Yeh I can agree with you there - I posted this video for some friends/hobbiest that wanted to see the machine - video is more a simple show and tell - if I would have a chance to do it again, I'd make a detailed how to construct your own - I think it would help a lot of folks. Thanks for your interest though.

Hello and thanks for your interest - it actually works VERY well for cleaning newly casted parts. The abrasive nature of this process is similar to sand in the desert eroding rock. It leaves the metal work-piece extremely clean with a fine surface finish - best described as frosted in appearance. easily polished though.

Thanks for the info, I plan on building one. I may just use wood for the frame or even steel tubing. Aluminum extrusions has gotten kind of expensive!

Hey Thanks for the compliments - the motor, it's a 1/3Hp 90V, and I want to say I spent around $70 on ebay. I do remember getting a deal on it though - some days you can really find good deals, and some days you don't. Anyhow - thanks again for you interest, and if you have any other question, don't hesitate to ask. if you look up above under the "Published on" section, click the "show more", I've listed a pretty good parts list.

Hey Michael! and thanks for your interest. To answer your question, I haven't tried heavier media - however to throw heavier media, the motor should have no problem spinning, but the magnets - you'll probably have to get your hands on the strongest rare earths available. First thought that comes to mind - you'll need to use less media. Heavier media would probably not necessarily polish but work harden/shot peen/maybe even deform the surface of the work pieces. Let me ask ya - are you looking to clean, polish or harden?

Hello and thanks for your comments,, and to answer your question - I hooked up the motor directly. With a DC motor controller, you'll be able to make adjustments in the RPM's of the motor. Good luck on your build and if you have any more questions - just let me know.

Hello and thanks for your interest. The magnets are rare earth magnets. If you look under video or above these comments, you'll see a "SHOW MORE" under the "Published on" section. I have a complete list of all components and in some cases I even put links to the items you need to build your own machine. Let me know if you have any other questions or need help. Regards Brian

Thanks man, I've checked up the list. What about the material you used as abrasive? I thought stainlees steel wasn't magnetic

yep - you are definitely correct. However I think they're made certain blends of stainless steel that is magnetic to a degree?. maybe. Not sure how stainless/anti-rust it is though. . please find the link below to the jewelry supply company where I get the media from: www.riogrande.com/Product/Stainless-Steel-Shot-50-x-05mm-Pin/339355

Thanks a lot man, I'll check it out and tell you how my machine turned out. One last question, how's the result of the finishing?

Sure, don't hesitate to ask if you have any more questions. Not sure what you're gonna use the machine for, however, this machine is fantastic for "cleaning" newly casted pieces or cleaning oxidation off of parts.. It leaves an extremely smooth surface on the part, but something to note, it leaves a frosted finish - not mirror.

Sounds like a great plan - good luck and let me know how it turns out.