pier 9 guide: making your metal parts awesome by tumbling
Requirements for the use of tumbler at Pier 9 :*:[Seinfeld voice]
This is not to say that there is a problem.
Do you make parts in metal?
Do you want them to look clean and smooth? Instead, they have traces everywhere during grinding and marking, or sharp corners during cutting or machining, or hard-to-
Where does it take a few hours to get to clean up?
Tumbler is your tool!
This Instructable is a guide to using tumbler in Terminal 9 workshop at Instructable House, but if you want to take your metal parts to a new level, this Instructable can also be used as your resource.
You may be familiar with Rock wine glasses that have been running for weeks to wear and polish the rock surface.
Metal parts wine glasses work in a similar way: place grinding medium and water and parts in rubber
The inner-lined trash can that is rolled or vibrated to rub the medium on the part.
Detergents or compounds in the water help to prevent the media from being blocked by metal sludge, wear on the surface of the parts: sharp edges are broken, surface discoloration and imperfections are erased, and your parts are smooth, uniform and beautiful.
Rotating wine glasses (
Like a rock singer.
It is sometimes called the vibrating wine glass of the burrs tank.
Removal of burrs (sharp edges)
Is the main goal of most roll operations, but with the right media, you can even mirror-polish parts.
For metal parts, a small rock tumbler will work fine, although a bit slow, but at Pier 9 we have a 1.
A 5-cubic-foot vibration burrs tank that can handle up to 16 parts. copper-bearing metal*.
The rolling medium is like sandpaper: it even cuts hardened steel (slowly).
Jewelers often use small glasses to smash pounds or even gold.
Your biggest limit is size: the tumbler at Pier 9 has a 1.
Capacity of 5 cubic feet, measures 18 \"x 12 \".
Although there are a few hard-and-
Quick rules for filling wine glasses, please remember the following :-
Tumbler is the most efficient between 75-90% full (
Combination of parts, media and water). -
By volume, the ratio of parts to media is between 1: 3 and 1: 5.
In other words, if you have 10 cubic inches of parts to roll, you need media from 30 to 50 cubic inches.
How do you measure it, you ask?
That\'s how you look at it.
Don\'t worry too much, just make sure you have most of the media and you don\'t have more than 80% of the tank.
Don\'t forget, there is water here.
Ceramic and plastic are rolling media.
Ceramics are usually used in plastics of steel and aluminum.
The media has different shapes, sizes and grits (
See the selection of McMaster Carr here).
Don\'t be afraid of rough media: it may take a few more hours for your parts to roll fully.
At Pier 9 we have: the media is located in the project container when not in use.
The media will attack the edges of the part more aggressively than the plane, because the edges are more prone to wear and tear.
If you have too many deep marks on the plane of your parts, they may take a few days to roll, so if possible, consider grinding them with a fine grinding band/disc first.
If you are picking your own media, choose a size that can enter all corners and gaps in the part you want, but be sure that the media will not enter your role.
Solving dozens of small grinding blocks from your work can be painful, not to mention that those blocked areas don\'t get tumbling action like the rest of the part. *-
This is only the requirement of Pier 9.
To make the parts roll effectively, you want to use as little water as possible.
This is a trial. and-
Wrong learning process, but in general you want to put all your parts and media in the tumbler and then fill it with water until everything is slightly flooded.
The polished compound is a detergent/lubricant that keeps the medium clean and keeps the oil, metal particles and other contaminants suspended in the water so that the medium and metal can interact the way they should
You only need a small amount of compound, usually just a few teaspoons for a small glass of wine (
But according to the manufacturer\'s suggestion).
The polishing compound we have at Pier 9 is Vibra Finish VF 150, a micro-acidic mixture with anti-rust agent that prevents oxidation of steel.
You probably need one. 5oz.
VF 150 per gallon of water.
The Tumbler at Pier 9 is located in the Hazerdous material cage behind the pier.
There are a few things to do before you load the tumbler: The Tumbler\'s control box is bolted to one side off the ground.
It has a timer dial so you can turn it off automatically in a few minutes (up to an hour)
, Or just set it to \"on\" and come back at your own time.
When it starts, the Tumbler will make a bunch of sounds, but after 10 seconds it will hum evenly.
You can leave the cage now.
If this is the first time you use tumbler, don\'t leave while the dock is running.
The night roll is o. k.
But if something goes wrong, the clerk needs to know.
* After an hour or two, turn off the tumbler and take out a part.
Rinse it clean and have a look.
You should see that the edges have been knocked down and the surface begins to get even.
If your part is soft steel with a rolling mill scale, you will see the scale start to wear out.
Congratulate you if your parts look like you wish! !
You can keep cleaning up! !
If they haven\'t arrived yet, seal the tank and re-open it.
Depending on your target, it can take 1 hour to 2 days to roll. * -
In order to roll overnight, be sure to write your name and information on the blackboard at the door.
In this way, security will not be frightened, and if something goes wrong, they will know who to contact.
Just because your part is done doesn\'t mean you\'re done!