Does it work ? Watch and find out. Plus the little Sherline lathe gets a workout. Camera: Nikon L820
Пікірлер: 73
@Steve.Garrison5 жыл бұрын
Great job! I wouldn't have guessed that ordinary copper wire would bond to carbide. I have done some silver-soldering of carbide saw blade tips - it's frustrating when parts move. I just snip off a short piece of solder rather than touching the joint with the wire, it takes less heat. Like silver, copper wire rapidly conducts heat away from the joint. Subscribed. Cheers!
@TechGorilla19877 жыл бұрын
I was a rock crusher technician for a few years here in the US. We used to use old wire coat hangers to braise thin metals for covers and guards. It worked a treat!
@JohnBare7477 жыл бұрын
The old Copper Carbide Caper, good one, nice to know as one can never predict when something like this tip will come in handy one day.
@iancraig19517 жыл бұрын
A well planned video again Rob---and its easy and quick to braze up your own tooling---more power to the hobby machinest..
@AmateurRedneckWorkshop7 жыл бұрын
G'day mate. That was the usual inventive Rob for sure. Now we know and just watching has given me ideas. Thanks for the video.
@tomherd41797 жыл бұрын
Good to know about the brazing. I have some carbide that has damaged corners from normal (or abnormal) tool use. But other sides/corners are ok; so by attaching the good side to a tool I believe I can get more use out of them. Thanks for the idea.
@Xynudu7 жыл бұрын
Hi Tom, That's how I use up the damaged tips from my tooling. Just toss them in a jar for later. They break up easily when wrapped in a rag and hit with a hammer, to get small pieces (for small tooling). Cheers Rob
@shawnmrfixitlee64787 жыл бұрын
I do this all the time house wire is cheap and works just as well ! Thumb up Rob ..
@patrickcraig60327 жыл бұрын
Rob,thanks for info on the brazing.Will try using copper this week.When I had the Uni-Mat lathe I used the carbide tool bits with good success.High speed and slow feed rate.The motor would bog down if you tied to much of a feed.That is a cool homemade grinder with the connecting rod for a bearing support.
@Xynudu7 жыл бұрын
Hi Patrick, My father made that grinder. He was a motor mechanic. Simple idea. Still works a treat. Good luck with the copper. Needs plenty of heat. Cheers rob
@pg91124717 жыл бұрын
I think what you did here is great. But I also think its over kill. I drilled and tapped a hole for a carbide insert on square stock and works beautifully. I also have the ability to change out the good sides of the insert as it wears out. like your vids Rob. Keep up the great work you do.
@Xynudu7 жыл бұрын
Hi Pete, I have made indexable carbide tooling with a screw, and that's a no brainer. This video is an experiment to see how well copper bonds with carbide. Moving on from there, I can then use it to make small boring bars and tooling that won't take a screw in the conventional fashion. If you look at the boring bars in my drawer, you will see that the majority are in the above category. Cheers Rob.
@pg91124717 жыл бұрын
I knew I was missing something... Thanks for clearing that up Rob. Hey, how would you feel about a remote control for your sherline. I made one for one of mine and it works great so far. I would also like to share an idea for a machined spinning top. There's a whole group of people consisting of several thousand that are really into them. I think you might like it. You can start by looking up pocket top talk on Facebook. I have a video of my remote control lathe and examples of some tops I've made on my channel. Really like your channel.
@Xynudu7 жыл бұрын
Hi Pete, I checked out your videos, interesting. The remote is sort of like manual CNC. Not for me, but thanks for the heads up on it. Your spinning tops look beautifully made. I will check out the link on facebook. Cheers Rob
@Xynudu7 жыл бұрын
The hole is only there for a locating pin or screw. Some inserts don't use a hole. It is not required for brazing purposes as the bronze will capillarate/flow between the carbide and the tool base to form the bond. So yes, those inserts would work OK as shown in the video. If you look at fixed tip carbide tipped tooling, you will see that the carbide is held on by a bronze base. Cheers Rob
@billbaggins7 жыл бұрын
Interesting as always Rob Shirley is running nice and sweet now. Cheers mate.
@Xynudu7 жыл бұрын
He He Shirley, that's a good one. Cheers Rob
@billbaggins7 жыл бұрын
Maybe you could make a nice etched brass nameplate for her. Cheers. Bill.
@barry76087 жыл бұрын
loved the vid, good to watch people who know what they are talking about. Just a comment on the gal (zinc) playing a part in your previous vid, it would seem total nonsense to me. The zinc will almost have completely burnt off by the time you had reach brazing temp. No zinc no influence. Love the idea of using copper as an alternative
@keldsor7 жыл бұрын
Hi Rob ! I'll surely try that some day in the near future - thx for sharing !
@Xynudu7 жыл бұрын
At least it will warm you up a bit Keld :) Cheers Rob
@keldsor7 жыл бұрын
xynudu Yeah, I could use that at the moment - we have a damn cool periode here right now ;-(( The shop is waiting ... but one thing that's nice - I have a clean bench over there waiting for me ;-))
@russbilzing53486 жыл бұрын
I used to make copper ingots of the scrap I'd collected and the best method I could find was a carbon arc torch chamber.
@ChrisB2577 жыл бұрын
Apart from the need for higher heat input, the bond seems viable for sure. :)
@mackk1237 жыл бұрын
i have a bunch of old saw blade teeth from when i tried to make some meat cleavers... ill definitely try this! i am a big fan of your work!
@Xynudu7 жыл бұрын
Be aware that the tungsten in most saw blade teeth is generally a lower hardness and more brittle than tungsten for tooling. So they may chip/break. But having said that, give it a go and see how it works. I've never done it, and some feedback would be good. Cheers Rob
@ke6bnl7 жыл бұрын
I have used wood saw blades I cut up to .500 width and put in my parting tool for parting steel. has worked really well.
@keantoken64336 жыл бұрын
Perhaps silver solder would have the benefit of requiring less heat so you don't lose all the hardening in your shank? This might be helpful for long boring bars where rigidity is important. Or perhaps use an air hardening steel and adjust the process to create the right hardness?
@rayfalcone68976 жыл бұрын
nice tip Rob,as asual you pulled it out of your bag of tips....
@myscummyneighbours60657 жыл бұрын
I've made lathe tools and grinding wheel dressers (for a living) for 10 years. If you need any help, let me know. Setting up my own home workshop myself atm.
@coburnlowman7 жыл бұрын
Glad to know. It's odd that I haven't needed to braze anything in at least 10 plus years. Last week I broke a steel hydraulic line and several other brazing jobs popped up after. I'm glad to know copper wire will work. One thing tho I didn't catch what you're using as flux?. Now will it work for bandsaw blades? We have a band saw mill that occasionally breaks a blade for no reason and we have them piled up and they need welded.
@Xynudu7 жыл бұрын
I use Ezi Weld 303 which is a universal Borax based brazing flux. The correct flux makes a huge difference. I've tried brazing band saw blades with very limited success - they need to be electrically welded from my experience. Rob
@doughenning48993 жыл бұрын
I think the one who committed zinc and copper make brass is mistaken ! Copper and Tin ???
@almapartnership52933 жыл бұрын
At the temperatures needed for melting copper the zinc would have long ago evaporated. Molten Zinc has a high vapour pressure which is why its difficult to refine in metallic form and before electrolytic methods were discovered is was made by a condensation process.
@markspc16 жыл бұрын
Good work. It maybe that brazing carbide tip with copper is better than brazing rod because copper is a good heat conductor and will carry the heat away from the cutting edge more efficiently.
@Xynudu6 жыл бұрын
Carbide works better the hotter it gets, so a bit of extra heat is a good thing. There is a limit of course and that's why CNC machines run coolant for production runs. Cheers Rob
@TrojanHorse19597 жыл бұрын
Very interesting, thanks for sharing!
@Xynudu7 жыл бұрын
I tried this in a previous video and failed. This time I used a simple brick hearth as a heat trap, and it made all the difference. Cheers Rob
@marmac5672 жыл бұрын
im surprised you shifted carbide with your carborundum stone.. ive always needed to use a diamond..
@Xynudu2 жыл бұрын
I use a green stone made to grind carbide.
@brandontscheschlog6 жыл бұрын
Great video! What kind of flux did you use? I tried using copper wire yesterday to braze carbide onto steel and I had no luck. I will try again. Maybe I didnt have enought heat and I was worried about getting the carbide too hot
@Xynudu6 жыл бұрын
I used EZIWELD 303. Any Borax based flux should work. Cheers Rob
@meocats7 жыл бұрын
of course it can use carbide, what do you think swiss lathes making 5mm diameter parts use? crappy ass hss bits?
@ericjohnson84827 жыл бұрын
That grinder with the connecting rod for a bearing holder has me intrigued, can you tell me more about it?
@Xynudu7 жыл бұрын
Hi Eric, It was built many years ago by my father, who was a motor mechanic all his life and in the army during WW2. It uses two inverted conrods, with sealed ball races clamped in the bottom ends by the bearing caps, and the gudgeon pin ends clamped by a through bolt. A junked belt drive motor completes the package. It's been used for cutting, grinding, tool sharpening, wire buffing and metal polishing over the years. Great because there's no motor body to get in the way, as with my generic 8" grinder on the bench. I did a video on it way back: kzbin.info/www/bejne/p2qtfoV6r82np7s Cheers Rob
@Bigtwin887 жыл бұрын
Nice job...
@strokedriedrie7 жыл бұрын
Nice work Rob! By the way do I hear and see it right you straighten the engine so the pulley's are inline no, the noise is a lot less!?
@Xynudu7 жыл бұрын
He He. Yes it's all aligned correctly now. It turned out a neat fix Arend. I made up a thin strip (1 mm) of right angle steel which fits in the motor mount arm and squares everything up. The noise is OK now. Cheers Rob
@mikekrening73277 жыл бұрын
Hi Rob, is the magnetic, digital measuring tool you use on this video a homemade tool? If so tell us about it. Thanks Mike
@Xynudu7 жыл бұрын
Hi Mike, Yes, it's an original idea I came up with many moons ago. Lots of people have since copied it. I have a blog on it that tells all: users.tpg.com.au/agnet/microdro2.html It's super handy and cheap to make. Cheers Rob
@nedshead59067 жыл бұрын
I've used my arc welder with carbon gouging rods (after peeling off the copper sheath) as an improvised electric arc furnace before, I put one gouging rod in the hand piece and the other in the ground clamp, I wonder if I could put a gouging rod in the hand piece and use it to heat the work and then braze carbide tips with it?, I don't have a gas torch so I might have to try it out
@Xynudu7 жыл бұрын
You can only try it and see if it works. That's not something I've had any experience with. Lets know what happens. Cheers Rob
@KnolltopFarms7 жыл бұрын
Sounds harry to me, but if you're patient and careful I wager you could pull it off. May be a bit of an overkill, and I imagine the hardest part would be not blowing chunks out of your steel shank, LOL! Please do let us know.
@meocats7 жыл бұрын
this would have been useful 10 years ago. nowadays you can get brand new coated inserts off ebay for less than 20usd a pack shipped.
@justincomisk7 жыл бұрын
Very cool. Are the new Sherline mini lathes still good?
@Xynudu7 жыл бұрын
It seems so, judging by the comments and what people do with them. I've never used one. Rob
@MakinSumthinFromNuthin7 жыл бұрын
Rob, having an extremely hard time on mobile device hearing you lately...I know you are soft spoken but had to wear earphones to hear you on this vid using an iPad. maybe its my end....dunno
@Xynudu7 жыл бұрын
When I play that video, my volume control on the desktop PC is at 50%, which is where I usually try to set the video. It varies with the PC/device . My I5 Asus laptop has the volume up full on all YT videos (not just mine). I always wear headphones with YT as it's clearer than those poxy speakers most PC's have. If I go louder when shooting the video, the camera can easily over modulate and distort the sound. Can't do much about it except get a camera with a mic jack, which I will do one day. Cheers Rob
@MakinSumthinFromNuthin7 жыл бұрын
Ohh, its no problem, I always get around an issue. Just thought I would mention it in case it wasn't a problem on my end. I have an iPad2 from like 2008...a total POS for viewing my favorite channels. Cheers, MSFN
@ARCSTREAMS5 жыл бұрын
you should have left it like that at 6:10 and not played more with it,you ended up moving it out of position
@ke6bnl7 жыл бұрын
I might have missed it but what flux are you using, silver solder, or brazing flux??
@Xynudu7 жыл бұрын
Hi Ed, Brazing flux - Eziweld 303. This is a pink Borax based flux. Cheers Rob
@ke6bnl7 жыл бұрын
Seem like it is only listed in Australian item, wonder if brazing flux will work mostly Borax. Not a real issue I have always want to try to try tig welding copper with copper and I will just have to throw in a test of copper braze with my brazing compound. thanks ED
@leonardpearlman40177 жыл бұрын
Silver solder with Nickel is the standard thing, and black flux. If you were going to buy something. Ordinary silver solder seems to work pretty well for bandsaws, someone mentioned that earlier. Like "Easy Flo". You don't need very much.
@Zakamooza7 жыл бұрын
might sound like a stupid question, but can you not weld it ?
@Xynudu7 жыл бұрын
No.
@turbotonic277 жыл бұрын
why is that ?
@Xynudu7 жыл бұрын
You need to have an induction welder - which is a production piece of equipment beyond most home workshops. Rob