DIY Mini Rock Crusher (No Welding!)

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Check out my updated crusher video here: • DIY Mini Rock Crusher ...
In this video, I show you my process and design for building a small rock crusher without having to weld anything. This is a chain-mill style of rock pulverizer that mounts on to a small angle grinder and can reduce rocks from 1" to passing 60 mesh very quickly.
Purchasing a mini-mill like this online will cost between $200-$400 USD and I was able to build this one for $40-$70 CDN ($30-60 USD). It has the added bonus of being able to replace the steel liner pieces as they wear out, versus the expensive mills online that do not have replaceable liners and would have to be tossed out or welded to repair.
There is a detailed list of materials at the end of the video.
The angle grinder I use in this video is a 6-amp, 4.5" SKIL angle grinder that I picked up on sale at Canadian Tire for about $30.
#goldprospecting #goldmining #mining #DIY #prospecting #metallurgy #mineralprocessing #goldpanning #smelting #rockcrusher #chainmill #fossicking #gold

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1 окт 2024

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Комментарии : 62

@mijodo2008 3 года назад

very innovative, clever use of available materials, top job. Cheers from Michael. Australia.

@brandondobbins8845 7 месяцев назад

I used an old pressure cooker and didn’t have to worry about making a lid just had to drill a hole and make the frame for the grinder and bam done thanks man for real I followed your advice with a few mods and got a motorized rock crusher for half the price of the cheapest hand held one seriously appreciate it brother

@LetsCrushRocks 7 месяцев назад

Thanks man, glad your build worked out! Great idea with the pressure cooker. Cheers.

@caseybeckner2625 4 месяца назад

Do you have a video of you making or using your crusher I would love to see it

@LetsCrushRocks 4 месяца назад

@@caseybeckner2625 Working on that! I have a Short video up showing me use it to crush silver ore. But I need to post a longer form video of the crusher showing additional changes I have made to it recently. Hopefully I will have that soon!

@johngillen3331 2 года назад

Not only like this, LOVE IT!!!! Getting create in Southern California. Already finding gold!!! Let's get crushing!! Thanks a million!!

@CandSMINING 2 года назад

Thanks for doing this video. I also found that the motorized portable crushers are very expensive. I just made a hand crusher that is OK for small samples but is too painful for any larger quantity. Thanks for sharing, very smart.😎⛏⛏🔥🔥

@LetsCrushRocks 2 года назад

Thanks, Chuck. I've got a ton of samples in my shed that need processing, its just hard to find the time to do it! It doesn't help that its winter here in Canada and I don't have an indoor work space.

@CandSMINING 2 года назад

@@LetsCrushRocks Time is the big problem for us all. Only so many days and so mant hours in them.

@oliverbeerthanksplease6772 2 года назад

Dude ...that's really good

@LavidadeTony Месяц назад

😅Eres un genio....

@cbarkerify 3 года назад

You need to feed the rocks into your rock crusher, after, your angle grinder is running, not before !

@soapsuds5811 2 года назад

Looked everywhere for a vid to make one because I’m not paying the crazy prices people put out there great vid

@andypandyAU.6669 5 месяцев назад

Good job, always good to see budget builds. ❤it 😊

@LetsCrushRocks 5 месяцев назад

Thanks! I'm just finishing a few modifications to it now and should have an updated video out in a week or two. And I promise the next video won't be so long-winded!

@michaelcutts9866 2 года назад

Good video extremely creative and very well planned out!! I'm going to build One of these!! Thank you for your time effort & devotion to the Love of Gold 🪙

@accordv6er 2 года назад

Mini HSI. Still dusty and noisy like a full size.. wonder if there's any industrial manganese scrap that can be gotten cheap

@LetsCrushRocks 2 года назад

Would be nice to find some of that. Unfortunately I have had so little time this past year to use my crusher that I haven't worn out the plates yet!

@blainesplinter6818 3 года назад

you could really simplify and cheapen it by using an old brake drum

@LetsCrushRocks 3 года назад

Genius. I'm not much of a car guy, never would have thought of that. Though now that I've googled some brake drum specs, they look like a great option. Even made of wear-resistant steel.

@d.jensen5153 3 года назад

Delightful. Angle grinders are a real bargain...eminently useful to make things, eminently useful to power things you make. Your video gave me all kinds of ideas as well as the motivation to get going on them. Thanks!

@LetsCrushRocks 3 года назад

Thanks Jensen. The grinder has proved to be a staple tool in my shed. I recently picked up a rock cutting disc for it that I plan on using to cut up some of my rock samples to give them a smooth face. I also just posted a video today of a kiln I made and the grinder was necessary for most of the work. Good luck on your projects!

@petermccarthy8263 2 года назад

Hi and Thanks !.. 1/3rd done But, I used a 2 pc. clam broth steamer w/ spigot for the lower broth pot ($10)..cut that away to 3.5 in. as the pot is 12' so double and reinforce. two chain links (or even 3?). I really like not paying 300 - 1,200 bux of course ! keule !!!

@Berghiker Год назад

I think it's better to have two chains linked together, that way the washer should not break. Also the overall diameter should then also be larger.

@LetsCrushRocks Год назад

You mean have two chain links linked together on each side? I would have to make a much bigger crusher housing to accommodate the extra diameter. Might also be too much work for my little angle grinder to power something of that diameter as well, but perhaps not.

@Berghiker Год назад

Yes@@LetsCrushRocks

@ivankochkin3975 3 года назад

Hi, your crusher looks too weak and quite unsafe. Using thin washer for holding hammers might be dangerous - just estimate centrifugal force at rpms the angle grinder provides. I think you should better find a man with a welder to help you, as I did. Be careful.

@LetsCrushRocks 3 года назад

You're right, Ivan. The washer that holds the chains is definitely the weak point. I have since doubled the washers but need to find a stronger component to replace them as even the doubled washers are starting to bend out of shape a little.

@thingsofdoing4507 2 года назад

He said Canadian tires are just really thrift store pots cut , red greens niebors are just as funny

@mountainmanjim 11 месяцев назад

nice rock crusher ....thanks for sharing

@dmprospecting1190 3 года назад

I Like the small concept mine is too big and a headache ill do a video fixing her up she was road hard and put up wet so a little tlc and she'll be purring this friday ill get it uploaded thanks for watching. i subscribe to ur channel like your personality man keep ot up

@LetsCrushRocks 3 года назад

Thanks man. I'm working on a video of how I built my smelting kiln too. Might have that up next weekend. I'll look out for your next video. Cheers.

@green1394 3 года назад

good man! keep up the good work!

@LetsCrushRocks 3 года назад

Thanks!

@daschelroderickson5236 2 года назад

Exactly what I was looking for - thank you!

@LetsCrushRocks 2 года назад

Glad you found it helpful, Daschel. I finally got around to adding the rest of the steel liner plates this past weekend (almost 2 years later!). Just havent had much time to play with it. Maybe I will do a quick update video next week. If you're going to make one, do yourself a favour and use wider steel flat bar for the inner plates than I did. I think I used 3/4" width, but would recommend 1" or 1 1/4". Will save you time on drilling holes and money on nuts/bolts.

@closed2459 3 года назад

He said bitts an holes ( beviss an butthead laffter )

@shaheenyn7816 3 года назад

Thanks

@danielflinn3571 9 месяцев назад

Thanks from Australia looks great 3875

@IanBrodie-bg1lu 8 месяцев назад

me too,same country!

@antoniobradiano 2 года назад

nice work.

@AldoA77 2 года назад

Good tks

@nompro7268 3 года назад

thank you. I gave you the up thumb for being very thorough. Building one right now. How are the bolts holding the inner supports to the walls holding up?

@LetsCrushRocks 3 года назад

I tried spacing the bolts to keep them away from the centre of the plates where the main impact zone is, but I have not had much free time recently to crush rock so not much has worn down yet. I will circle back later this summer once I crush some more up. I do expect the heads of the bolts to be softer than the plates.

@nompro7268 3 года назад

@@LetsCrushRocks cool beans....I did a test on my prototype this am...lots of vibration. Wow really shook me good. Fender washer wearing quickly....angle grinder had more heat than usual. Tomorrow I am going to size down the chain to 1/4" and make a double fender washer. Hope to reduce heat and vibration. I drilled 1/16" holes x 25 where I chose to put the exit port located in the housing then straight piped it down 8". Worked nicely.

@LetsCrushRocks 3 года назад

@@nompro7268 I found that the holes I drilled in the side plate to eject crushed material did not work that well and perhaps only half of the material came out. I got in the habit of just tipping the whole thing upside down after every few handfuls of rock and dumping the crushed stuff out the top. Even with two fender washers I can see they are still starting to bend a little, I might try to find a stronger alternative. I do get vibration as well, which I think is somewhat inevitable with the chain and bolt much heavier than a cutting or grinding disc and the uneven wear on the chain pieces leading to imbalances. What sort of rock are you crushing?

@nompro7268 3 года назад

@@LetsCrushRocks quarts veins in iron..

@pierrelaboom4026 Год назад

do you have any suggestions now that youve run this for a while?

@LetsCrushRocks Год назад

I don't think I would bother with the outlet port and just load from the top, crush, and then turn it upside down to dump out. The large washer in the middle used to hook on the chains is weak and bends after a while, eventually breaking. I have doubled it up but it still bends. Would recommend replacing it with something thicker. I don't have a drill press so its hard for me to drill large holes through thicker steel. I saw a recent build video by Orophilia that was really good, he makes a nice crusher.

@pierrelaboom4026 Год назад

@@LetsCrushRocks thanks alot. i made a steel flailer to make solid steel stair ballisters look handforged, there was alot of trial with errors but i got it done and its useful for beating alot of otherstuff also!Pierre laboom, ""browns finally stair ballister basher"

@onlyme5999 2 года назад

Lol so complicated, but good stuff I can't wait to get everything together in the motorhome and see what I could use to make one.

@LetsCrushRocks 2 года назад

Metal projects always get a little more complicated when you can't weld anything! Though I recently bought a welder so I might make a new crusher in the future...

@hayatel2557 Год назад

Can this grind Sand into flour size particules please ?

@LetsCrushRocks Год назад

It is a rock crusher, not a grinding mill. The samples I have tested result in approximately 50% of the rock passing 60 mesh. I dont think it would regrind sand very well at all. You would better be served by a ballmill for that.

@johnnyarmijo4235 Год назад

Uni bits😂

@emperor7697 Год назад

Hi bro I need drawing of this machine

@LetsCrushRocks Год назад

Don't have one.

@mfddb3084 3 года назад

Is your name Shane?

@LetsCrushRocks 3 года назад

It is not.

@mfddb3084 3 года назад

@@LetsCrushRocks ok my apologies you look like best friend from Canada. I havent seen him in 10 yrs. He moved to BC somewhere and we lost touch with each other.

@LetsCrushRocks 3 года назад

@@mfddb3084 In that case, your friend must be a really handsome guy. BC is where I go to hike, camp and collect rock samples from old mine sites in the summer.