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Thread: Nice contract for someone
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30th March 2011, 05:09 PM #1
Nice contract for someone
A man I know has won a contract for supplying some piers for a wharf. They need to be replicas of old style timber piers.
He needs 80 for now (probably lots more if these are successful) piers that are 2.5 metres long * 450 mm dia and with a hole 200mm diam bored through the length of the log.
The logs may NOT be turned on the outside as they must retain a felled log look.
If you are interested in making these or even if you can think of a good way of making them, then please let me know.
Bob WillsonBob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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30th March 2011 05:09 PM # ADSGoogle Adsense Advertisement
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30th March 2011, 05:54 PM #2Retro Phrenologist
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This thread may be of some interest to you.
https://www.woodworkforums.com/f40/ta...ght=chimpanzee
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30th March 2011, 09:30 PM #3
Hi Bob long shot here depending on where you need them I d suggest trying an engineering company with a long bed metal lathe. We used to send out Large ships shafts When I worked at garden Island in sydney one apon a time they had the largest in the country, there is also a company that used to have one near Williamstown in VIC I am not sure about queensland or its naval yards. so I ve got no idea where to look I honestly think they will be your best bet as they d probly be only Lathes to get a 200mm cutter trough the chuck you may be able to get a line borer to do it as well but it will be a long slow process an big big $$$$
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30th March 2011, 10:32 PM #4
Huh?
OMG!
How does one "win" a contract without knowing how to execute it
Unless there are very generous provisions for escalation, it's a contract I'd prefer to lose. Is insanity a valid basis for release
Are you sure about the dimensions? The proportions look entirely out of kilter, in contrast to all the waterfront structures I've engineered.
No offense, but horrified,
JoeOf course truth is stranger than fiction.
Fiction has to make sense. - Mark Twain
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31st March 2011, 10:42 AM #5
Hi Joe
He had some thoughts on how to do the job but was looking for better cheaper ways to do it.
I had some thoughts myself on the method that he could use.
1) split the log with a bandsaw
2) run the resulting half logs over an ordinary bench saw set at 45 deg.
3) reverse the log and do it again
This should then give a half log with most of the centre removed in a V shape
4) set up the saw for coving and run the log over the saw raising the blade incrementally until it is at 100mm
This will then give us two half logs that each have a half moon with a radius of 100mm
5) glue the logs together again with an epoxy glue
itsposs
We had thought of using a lathe originally but this was always going to be very problematical as the outside of the log would be no circular. So, assuming that we would need a rest for the log about half way along its length, the log would probably be running offset. So, if we instead make the log static and the head holding the cutters we then have the problem of moving the log forward incrementally. All-in-all, I don't think that a lathe is a goer. But then again, I am not a turner and someone who is may have some alternative ideas.
Avery
Thanks for the link, it gave me the idea above.
If anyone else has more or better ideas or is interested doing the work, then please contact me.
Bob WillsonBob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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31st March 2011, 11:01 AM #6
I'm with Joe on this – utter madness or brinkmanship.
One-piece log pipes were in common use for water and sewerage from Roman times up until the twentieth-century. My uncle used to have a 6" or 8" auger in his shed which apparently was used for making such pipes. An auger would be the cheapest and probably the simplest approach..
I know you believe you understand what you think I wrote, but I'm not sure you realize that what you just read is not what I meant.
Regards, Woodwould.
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31st March 2011, 12:00 PM #7Retired
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Why does he need a 200mm hole right through?
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31st March 2011, 12:15 PM #8.
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It sounds to me like he is setting up a faux structure.
2.5 m piers are obviously not going to be driven into the bottom too far. I suspect he will have a steel pipe or steel/concrete structure and the piers are just a rustic sleev.
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31st March 2011, 01:23 PM #9
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31st March 2011, 01:32 PM #10New Member
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Maybe some type of mining drill.
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31st March 2011, 01:36 PM #11
As BobL surmised, the outer timber is just for show. They will be lined with 180/200 mm diam steel pipes.
They need to look as close to the original piers as possible, whilst incorporating modern technology to ensure that they last a lot longer next time.
No Woodwould, Dulux Seaside Bark would not do the trick, but the 8 inch auger is not a bad idea. How were they driven?Muscle power alone?Bob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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31st March 2011, 01:44 PM #12
Worth a try. The augers I've seen in person and in photographs had T-handles and were indeed muscle-powered. I have a recollection of a photo with one end of an Elm log propped up on another log and a bloke winding the auger down the length of the log. I'll see if I can find the book and scan the image for you.
.
I know you believe you understand what you think I wrote, but I'm not sure you realize that what you just read is not what I meant.
Regards, Woodwould.
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31st March 2011, 02:05 PM #13
Thanks Woodwould
Something else that may to be taken into account is the hardness of our hardwoods. Elm is a relatively soft hardwood. These piers would be made from TallowoodBob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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31st March 2011, 06:36 PM #14Retired
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In that case you don't need a hole right through but about 400mm deep to locate on a spigot (if you need one at all).
A 450mm Tallowwood pole would be as strong if not stronger than a steel pipe of 200mm.
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31st March 2011, 06:48 PM #15
You are most likely quite correct but the contractors want what they want and he is not allowed to go outside those requirements.
Even so, just going in 400mm would still be quite difficult to do.Not as difficult as 1250 from each end, but still difficult.
Bob WillsonBob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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