Got Carbide?

Discussion in 'link to various suppliers' started by Jason, Aug 6, 2019.

  1. Jason

    Jason Silver Banner Member

    In my typical style, I'm stuck looking for the crap that's impossible to find. I need a carbide tipped hammer and chisels so I'm pretty sure looking at HD and Blowes is a waste of time. Then I found this guy.

    While I loath working wood, he's got some slick videos and good ideas for carbide tools.
    Here is a link to his supplier for blanks. https://centennialcarbide.com/carbi...MI_MqB9_Tu4wIVjv_jBx0fbAyLEAAYASAAEgJvKPD_BwE

    If you have any carbide suppliers you suggest, please add them.
    Trow & Holden may be the good stuff, but it's more than this guy needs.


     
  2. Jason

    Jason Silver Banner Member

    Any of you machinist weenies put carbide tips on your own stuff?
    How hard can it be? Cut the end off a chisel and silver braze a tip on and sharpen... ???

    CHS.477ceb5cec5866f1797ed362850f1b90.42a8729a50684fbec6ea818a897125ef.jpg
     
  3. Al2O3

    Al2O3 Administrator Staff Member Banner Member

    Carbide is of course very hard but very brittle with little to no impact resistance......might not be the best choice for a chisel tip. Other tool steels are much tougher, you just need to dress them more often. This is for chasing cast silicon bronze, correct?

    Best,
    Kelly
     
  4. Jason

    Jason Silver Banner Member

    Its for Dalle de verre. Didnt watch the video? That picture is a Trow & Holden stone chisel with a carbide tip. Stuff cant be that brittle.
     
  5. Al2O3

    Al2O3 Administrator Staff Member Banner Member

    Nope. Any video North of ten minutes immediately draws my cursor to the close button.

    If you're scratching glass with a wooden handled tool that's one thing. When you post a picture of what looks more like a cold chisel and talk about brazing carbide to it that evokes thoughts of a different use.

    What are you waiting for? Have at it and post up your results!

    Best,
    K
     
  6. joe yard

    joe yard Silver

    Hi Jason
    That is about it. It is not hard to do however using silver solder for the job is not the normal way it is done. I do know it will work though. The usual bonding metal is bronze with a good flux. I have put inserts on cutting faces for well drilling bits in this way. Some people use a Oxy-act. torch. I prefer the kiln or heat treat oven way of doing it.
    I have some hard facing material that is no more than poured bronze 3/8 +/- rod that has carbide particles the size of B-Bs mixed in.
    Are you sure you need carbide? They make some very hard facing rod that can be stick or T.I.G. welded to the tips. Carbide is very hard to sharpen without chipping!
    Joe
     
    Jason likes this.
  7. Jason

    Jason Silver Banner Member

    That's what I was looking for Joe. Thanks. I just found a saw blade guy on YT (a pro, not some yaywho in his garage) that was using silver solder and flux to attach carbide tips. They came pre tinned. I think ToT did a video awhile back showing how it's done. I've got a carbide blank in the mail now and bronze to try tigging it on. Got a recommendation for a flux? You think black might work for this with sil bronze tig wire?

    The trouble is the one guy left on earth tipping stuff for the dalle world seems to be pushing up daises these days. :( Makers of glass slabs used to sell tools, but inventory has dried up. I heard the stories of this stuff being brittle, it's all BS. In less than the first 2 minutes of that video above, Patrick dispels that myth. Here's a link for Trow. https://trowandholden.com/ Interesting company with a long history doing this stuff. I guess if I was working rock, they would be the solution. I need smaller stuff for these, an inch wide chisel or a 3lb hammer isn't going to cut it.... lol.. get it? cut it? Ha!

    Trow did offer to custom make my stuff, but I didn't dare ask how much. Afraid to ask. I'll try the DIY method, that I am not afraid to try and do. ;)
    Found this on fleabay. Seems a little high for a couple of old hammers. https://www.ebay.com/itm/Mosaic-Ham...588418?hash=item1cd2cac542:g:isgAAOSwVvBc-vYg
     
  8. joe yard

    joe yard Silver

    Black Magic is my go to flux. I have used it along with another I will have to try and see if I can still read the label but the Black Magic seemed to work the best.
    The trick that has worked for me is to flux, raise temperature to brazing temperatures, lightly flux again and hit- wipe VERY lightly with a SS brush just before applying the carbide.
    I have never had pre tinned carbide but it would probably be a great idea. I have had around a 95% success rate. When it fails to fully adhere it will be obvious.
    The picture is of around 7 Lb. Old destroyed tooling. The larger rounds mill ends are 3/4 inch and for the most part of the insert tooling is 1 inch. When i get up to around 20-30 Lb. I will send it in for around $6 - $7 lb.
     

    Attached Files:

    Jason likes this.
  9. HT1

    HT1 Silver Banner Member

    guys I braze Tungsten to Stump cutter teeth everyday the secret is Cleanliness sand blast the steel with an abrasive (garnet) you want it rough helps with the wetting if you have to sand it use a fresh piece of paper so you dont pick up anything , you need Black flux ( it's for Higher temperatures) here is the braze filler https://princeizant.com/product/silver-braze-50 staysilv 50 is about the same and easy to find https://www.harrisproductsgroup.com/en/Products/Alloys/Brazing/High-Silver/Safety-Silv-50.aspx.
    try not to direct the flame at the bare braze surface directly you will blow the flux off, you can put the pieces together with the flux in place then heat . we use OXY propane torches nothing special save we are on a continuous wheel so there is more then one torch, one preheats, then one at the braze point .

    if the joint surface turns black it has oxidized and the tungsten will come off


    V/r HT1
     
    Jason likes this.
  10. Jason

    Jason Silver Banner Member

    Thanks man. Amazon to the rescue.
     
  11. HT1

    HT1 Silver Banner Member

    if you run into a Problem message me, ill give you my Phone number and try to talk you through it

    V/r HT1
     
    Jason likes this.
  12. Jason

    Jason Silver Banner Member

    Thanks brother!
     
  13. Jason

    Jason Silver Banner Member

    1/4" chisel off amazon for 8bucks. Pretty hard to complain about that one. Its a start.
    I'm surprised at how easy it is to controllably chip glass. Would not have thunk it.

    Screenshot_20190810-120903_Gallery.jpg

    Screenshot_20190810-120914_Gallery.jpg
     
  14. Jason

    Jason Silver Banner Member

    Put a decent edge on the cheap carbide chisel. Showing lots of promise here.
    20190810_215612.jpg

    20190810_215635.jpg
     
    Tobho Mott likes this.

Share This Page