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  1. #16
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    Jun 2007
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    sydney ( st marys )
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    64
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    4,887

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    A mill would probably be the easier machine to find for slicing the slab,if a suitable slitting saw was not available it would just require turning over,80 mm in not overly thick for a saw blade?

  2. #17
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    Aug 2015
    Location
    Melbourne, Australia
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    843

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    Well, inspired by the misadventures of the 6x4 rong fu ninja sect - I thought I'd have a go at some lunacy. Of which I am not a total stranger to.

    Rather than figure a way to bring the monster slab to the bandsaw, I did it the other way around, and thinking I don't actually need a 110cm strip - more like one of 44cm now and another of 64cm later I thought I'd break the problem down by first lobbing off a 44cm end piece and then slicing something off of that.

    This is live folks.. here it is humming away. It'll likely need turning etc, but we'll see how we go with the tools and blade etc that I have.

    IMAG0520[1].jpg

  3. #18
    Join Date
    Jul 2010
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    Melbourne
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    9,088

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    Been away.

    Just be to the shed to take some measurements. Not exactly sure what you're after, but now that you have cut it down to 440mm, I should be able to fit in my saw to slice it up if needed. With the 440mm vertical I have about 120mm of throat depth. Not sure how square it would cut at those sort of angles though. Biggest thing I've cut was 305mm dia pipe, but that was in two or three bites as it was longer than the throat depth.

    Stuart

  4. #19
    Join Date
    Aug 2015
    Location
    Melbourne, Australia
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    843

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    Quote Originally Posted by Stustoys View Post
    but now that you have cut it down to 440mm
    Thanks Stuart ... but after 4 hours (and not even half way yet!) of cutting today the blade split and gave up life and I don't have another so looks like I'll get me one of those bimetal jobbies if I can find one. H&F has one but not very coarse.

    Stay tuned.

  5. #20
    Join Date
    Aug 2010
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    Near Bendigo, Victoria, AUS
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    72
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    3,102

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    You need to go to saw sharpening place. Look in the yellow pages. The retailers are hopeless for anything special like that. Get as low a tooth number count per inch as you can.
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  6. #21
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
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    6,439

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    I hope that you put some additional support under the overhanging piece. The weight as it cuts through is going to start to nip the blade if you don't ! Plus I wouldn't want to be too close to that lump when it did complete the cut. (shudder)
    Best Regards:
    Baron J.

  7. #22
    Join Date
    Aug 2015
    Location
    Melbourne, Australia
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    843

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    jhovel. Thanks. The search begins today.

    Baronj. Yes, there is support under the large non-overhang side as well under the overhang side. As it cuts down I'll give a few mm of play under the end of the overhand side to help it give the blade some space.

  8. #23
    Join Date
    Jan 2011
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    Far West Wimmera
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    63
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    4,049

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    Quote Originally Posted by StrayAlien View Post
    Well, inspired by the misadventures of the 6x4 rong fu ninja sect - I thought I'd have a go at some lunacy. Of which I am not a total stranger to.

    Rather than figure a way to bring the monster slab to the bandsaw, I did it the other way around, and thinking I don't actually need a 110cm strip - more like one of 44cm now and another of 64cm later I thought I'd break the problem down by first lobbing off a 44cm end piece and then slicing something off of that.

    This is live folks.. here it is humming away. It'll likely need turning etc, but we'll see how we go with the tools and blade etc that I have.
    Is your bandsaw normally on the floor or did you drop it for the job?

    I have what looks to be an identical saw except for the changes I have made. One of these changes would enable that lump to fit in my saw and clamp up like normal. I had a heap of frames that were about 200mm wide and it took them no problems. This involves moving the fixed jaw forward. When in this position the vice will not clamp small items, so it cannot be left like this. You also lose the angled jaw feature.

    Dean

  9. #24
    Join Date
    Aug 2008
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    near Rockhampton
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    6,216

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    Quote Originally Posted by Stustoys View Post
    Been away.

    Biggest thing I've cut was 305mm dia pipe, but that was in two or three bites as it was longer than the throat depth.

    Stuart
    I had to click the "pictures please" thing to see what it actually does, so thought I would pick on your post..

    Now I see what it does.
    Gold, the colour of choice for the discerning person.

  10. #25
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    Aug 2015
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    Melbourne, Australia
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    Sorry! I just did the same. Whoops!

  11. #26
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    Aug 2015
    Location
    Melbourne, Australia
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    Thanks Dean. I took the legs off the saw to get it on the ground. All much safer down there.

    're the 200mm. This lump is actually about 215mm ... which dagnabbit is about 5mm wider than fits. I have removed all clamps from tha table to get some room there.

    Got 2 4tpi bimetal blades on the way from Specialist Saws in Melbourne. Seemed a nice fellow.

  12. #27
    Join Date
    Mar 2009
    Location
    Melbourne
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    54
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    825

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    Perhaps it's just my inner cave man thinking but might a quicker option be to use an angle grinder to cut a groove as deep as you can, then lift it a little and drop it on a piece of pipe or something similar positioned under the cut, even resting it on the pipe and jumping on the over hang or hitting it with a sledge hammer might do the trick. Worst case, flip it over and cut another groove from the other side.

    I know this will leave you with an ugly surface and you might loose some material in machining it back but if you have the wiggle room it would have to be much quicker than a bandsaw.
    Cheers,
    Greg.

  13. #28
    Join Date
    Aug 2015
    Location
    QLD
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    735

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    Quote Originally Posted by .RC. View Post
    I had to click the "pictures please" thing to see what it actually does, so thought I would pick on your post..

    Now I see what it does.
    So do ya get an email alert demanding photos?

  14. #29
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    Jan 2011
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    Far West Wimmera
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    I had another look at my saw. I have been cutting stuff in it. I can get 180mm in the jaws. The distance between the bearing blocks is 218mm, so your piece would just squeeze in, maybe. The angle of the blade could be a problem.

    There is an improvement that I am thinking of doing that will gain a a few mm. Not for this reason tho. I have seen the slots for the bearing block deepened and widened slightly to allow adjustment grub screws to be fitted for precise adjustment of the vertical blade angle. The extra width is to allow more movement. My saw does not quite move enough to get it perfect.

    Dean

  15. #30
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    Jul 2010
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    Melbourne
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    Quote Originally Posted by StrayAlien View Post
    Thanks Stuart ... but after 4 hours (and not even half way yet!)
    Well thats a bit of a worry. Granted you're using the wrong pitch but my saw(a couple of sizes up) will cut 110mm cast bar in about 7 minutes with a 14tpi (veri tooth or what every they are called). Was the blade sharp to start with? I wonder if there is a hard case?


    Quote Originally Posted by .RC. View Post
    I had to click the "pictures please" thing to see what it actually does, so thought I would pick on your post..

    Now I see what it does.
    Quote Originally Posted by YBAF View Post
    So do ya get an email alert demanding photos?



    10:24 AM - .RC. clicked Needs Pictures for this post: Great bar of cast iron - can anyone help cut it (and keep some)? by Stustoys
    Been away. Just be...




    Well now you know

    Just to prove it works, a couple of pictures lol

    Biggest thing I've cut so far is some 205mm dia pipe, though I had to rotate it during the cut. Though the paper mockup fits, I'm starting to wonder just how things would go if the arm pivot isnt square to the in 3 axis? Maybe its not one of my best ideas??

    Stuart
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