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  1. #1801
    Join Date
    Jun 2011
    Location
    Australia east coast
    Age
    71
    Posts
    2,713

    Default

    Quote Originally Posted by Ropetangler View Post
    Your suggestion of welded in threaded tie down points is somewhat like the concept of hard points on modern jet military aircraft, which can take everything from auxiliary fuel tanks, smoke canisters, electronic warfare equipment etc to bombs and rockets.
    That's why I welded in M12 stainless acorn nuts in various places on my boat hull. If I ever manage to score a 30 cal BMG I'll have nice solid mount points for it. Until then they'll serve for fuel cans, SCUBA cylinders and the like.

    On the ferry on Thursday, Melbourne on Friday then off to Gippsland to go sailing.

    PDW

  2. #1802
    Join Date
    Apr 2008
    Location
    NSW
    Posts
    537

    Default

    Re Ropetangler
    I am not sure why they do add the rails but on other models of the same vehicle they don't . I guess it's because of no gutter edge like on old vehicles . The rails throw the weight to the front and back nothing supporting in the middle .
    I don't want to interfere with the standard factory fittings so I am just adding to the rails and will install a removable centre support on each rail That sits down into the edges of the roof joint . The roof on a Nissan is very strong and if you watch that ice road towing show they pull up a Nissan that has rolled down about a 200 meters sheer drop and is a total wreck but the two occupants survived because the roof did not cave in. It only has to hold two spare tyres , two jerry cans and some recovery gear in a box . I will keep the load to 90 kilo max .
    The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.

  3. #1803
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    6,216

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    Am I imagining things or have a huge number of posts turned to vapour? Forum problem?
    Gold, the colour of choice for the discerning person.

  4. #1804
    Join Date
    Aug 2012
    Location
    Australia
    Posts
    645

    Default

    Quote Originally Posted by .RC. View Post
    Am I imagining things or have a huge number of posts turned to vapour? Forum problem?
    You're imagining things . Ok I confess I deleted my post. It was far too OT. Not really the place for it.

  5. #1805
    Join Date
    Nov 2006
    Location
    Bendigo Victoria
    Age
    80
    Posts
    7,471

    Default

    Quote Originally Posted by .RC. View Post
    Am I imagining things or have a huge number of posts turned to vapour? Forum problem?

    Yes, this thread was reported to the mods for having gone way off the rails with about 13 off topic posts.

    As a reminder the topic of this thread is "Your latest project"

    After discussion amongst the mods it was decided that the posts relating to Retromilling's health problem would be moved to a separate thread in the Off Topic forum, where they belong not here.

    //metalworkforums.com/showthrea...0659&p=1922175

    Some of the other off topic posts have gone to off topic heaven.

    Please keep this thread on topic or more posts will go the same way.

  6. #1806
    Join Date
    Apr 2008
    Location
    NSW
    Posts
    537

    Default

    That's fair enough it doesn't bother me but I bet some Doctor complained .
    The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.

  7. #1807
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    6,216

    Default

    Well nothing to do with machining, took some photos of what I did today.

    Replacing a not very old concrete tank that was apparently shoddily built. Only got about thirty years out of it. Have a plastic tank to put there.

    The top bit was smashed in a line with a sledge hammer as the walls were only about 40mm thick, then a chain wrapped around it and it was pulled away.

    The base was a bit trickier as I did not have any equipment on site that would easily shift it. So I punched a hole through the floor, lifted it with the crane and like the ancient Egyptians put some logs under it, let it down and pulled it away, until it broke in half.

    20170529_133742.jpg20170529_124352.jpg20170529_122507.jpg20170529_121536.jpg20170529_100713.jpg
    Gold, the colour of choice for the discerning person.

  8. #1808
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,541

    Default Horizontal screw press tooling

    I want to recess some bolts into sheet metal, such that when I run a small bead of weld around I can flush them off on the non-thread side while on the thread side it will not easily pull through.
    I'd seen this sort of tooling on project Binky and wondered whether I would be able to get it working on such a small scale. They use a hydraulic press but I was hoping for something this small to get away with the Horizontal Screw Press (aka the 5" Dawn vice)
    P1040084 (Small).JPG
    The pin in the centre is a 3mm dowel pin that has been sitting in the shed waiting for a task for the last 25 years... It's job is just to line up the two halves through a 1/8" hole in the sheet metal. I only have a couple of these to do so the tooling is just some bright steel bar, 12mm diameter. The spigot is 7.6mm in diameter, allowing me to turn down the head of a M5 hex head bolt to round (and thin it down to around 1.2mm) for fitment.
    Much to my surprise it worked first time without the need to modify anything. Even putting it up near a sheet edge did not produce large amounts of distortion.
    P1040085 (Small).JPG
    The dimples will be drilled to size (5mm) but I thought if I left the centre hole small it would not tear as easily.
    Next trick is to make up some studs and see how the sheet is affected by the heat - I'm hoping that most of it will stay in the head of the stud and leave the sheet without too much ripple.

    Michael

  9. #1809
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

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    I have done this a few times using suitably countersunk block of steel underneath, clearance holes and just one of the countersunk bolts I need it to take. The hole stretches a bit, but not enough to be a problem.

    Dean

  10. #1810
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    6,216

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    Tank in place. Only thing that has gone wrong is the colour of the tank. Not my sort of colour it is too bland.

    20170530_105136.jpg
    Gold, the colour of choice for the discerning person.

  11. #1811
    Join Date
    Jul 2011
    Location
    Melbourne Australia
    Posts
    1,376

    Default

    That Hiab must have just about paid for its self by now?

    Do you have a wind mill to service that. Tell me you were leaning into the wind or some thing, that tank doesn't look level.
    Quote Originally Posted by .RC. View Post
    Not my sort of colour it is too bland.

    I can send you up some Graffiti Vandals / Urban Artist's. They will have that looking like a New York subway in the 10 minutes past 2.00 am.

    Regards Phil.

  12. #1812
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

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    I don't think they come in light red!!!!!!
    To grow old is mandatory, growing up is optional.

  13. #1813
    Join Date
    Oct 2008
    Location
    N.W.Tasmania
    Posts
    1,407

    Default

    Quote Originally Posted by Machtool View Post
    That Hiab must have just about paid for its self by now?

    Regards Phil.
    I would have thought so too Phil, but it looks like he's running the space saver tire on the LH rear.

  14. #1814
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,541

    Default

    Quote Originally Posted by KBs PensNmore View Post
    I don't think they come in light red!!!!!!
    You'd think that wouldn't you, but no...
    P9128509.jpg

    Michael

  15. #1815
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    OK, so I'm wrong again, SWMBO always says I am.
    Kryn
    To grow old is mandatory, growing up is optional.

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