Thick walled pipe

[sean logieParticipant @seanlogie69385]

[sean logieParticipant @seanlogie69385]

Been trawling the net on and off all day looking for 3″ od 10mm wall thickness about 7″ long . There are companies out there, but they want an arm and a leg for it . I’m emailing a guy on eBay to see what he can come up with . He had the right od and wall thickness but it was too short . Any ideas guys .

Sean

[MikeParticipant @mike89748]

I once needed something like this, although not quite the wall wall thickness, and found it on a car-builder's website. I've trolled though old emails but, sorry, I can't find it. Good luck!

Edited By Mike on 19/10/2017 21:01:10

[Speedy Builder5Participant @speedybuilder5]

Bore out a bit of 3" bar – won't take that long and would be cheaper.
BobH

[sean logieParticipant @seanlogie69385]

Thanks Mike ,think I might be getting somewhere now at last . I could get solid round bar and bore it out ,would be a lot of turning lol .

Sean

[egaParticipant @ega]

Mike:

From what I know of you, you were trawling rather than trolling!

I use Thunderbird and find the filter and search features very helpful.

[Mike PooleParticipant @mikepoole82104]

Hydraulic pipe for large presses can have these sort of dimensions, maybe a hydraulics specialist may have an off cut

Mike

[David George 1Participant @davidgeorge1]

A company just round the corner from where I live supplies tube cut to length Nefco metal suppliers Sutton in Ashfield Nottinghamshire. If you like I can ask or you can call them yourself.

David

[John HinkleyParticipant @johnhinkley26699]

That's pretty hefty pipe, Sean. I'd be looking at something along the lines of a discarded hydraulic cylinder to get the wall thickness you're after at an affordable price. Try an agricultural engineers or scrap yard.

John

[Carl Wilson 4Participant @carlwilson4]

Stuff like that is called hollow bar I think.

I bought some stainless hollow bar from Schoeller Bleckman. They were ok.

[HopperParticipant @hopper]

+1 on drill and bore a piece of round bar if you can't find pipe conveniently. You can use a bigger boring bar as the hole gets bigger so should not take too long. When roughing you can probably drill right through then bore halfway from one end and then turn the job around and bore in from the other, thus reducing boring bar overhang and allowing deeper, faster cuts. In a smaller lathe such as Myford etc, using a fixed steady to support the end of the job will improve stability and up cutting rate too.

Edited By Hopper on 20/10/2017 01:19:31

[MikeParticipant @mike89748]

Hi ega: It's the curse of predictive text, and I was certainly trawling. It caught me out twice yesterday, once on this website, but it also made a complete nonsense of an e-mail I sent to a friend. Must find a way of turning it off!

[Ian S CParticipant @iansc]

I don't know the availability of hollow bar, I think it might be about 1 1/2" bore, shouldn't be too bad price wise if you can find an off cut.

Ian S C

[egaParticipant @ega]

Mike:

Have sent PM to avoid OT clutter.

[sean logieParticipant @seanlogie69385]

Just priced the hollow steel bar from Steelexpress

cost of material…..£35

Shipping (bearing in mind they have a shop in Inverness 20 min from me) Hopefully I can just go and collect .

£25

Vat …£12

Total ……£72 !!!!!!

I'm waiting for a reply to an email I sent ,they're closed today so it'll be Monday if they reply .

The joys if living in the Scottish Highlands I suppose . The amount of times I've gone to buy something to be told "we only deliver to the UK mainland " We are on the mainland lol !!!!! Wee rant over

Sean

[Involute CurveParticipant @involutecurve]

I just checked my scrap box I have some 90 x 12 wall, and some 60 x 10 wall, you could have either for the price of postage, however if your in no rush I can check at work on Tuesday and see if we have some neerer your size.

Shaun

[sean logieParticipant @seanlogie69385]

Posted by Involute Curve on 21/10/2017 16:01:38:

I just checked my scrap box I have some 90 x 12 wall, and some 60 x 10 wall, you could have either for the price of postage, however if your in no rush I can check at work on Tuesday and see if we have some neerer your size.

Shaun

 

Much appreciate the offer Shaun very kind of you . I'm in no rush , the bearings I'm using for the spindle measure

Bottom bearing ….od of the carrier is 62mm

Top bearing carrier …. od 56.93 .

Reason I'm wanting the wall so thick is for the rigidity , I'm going to be welding the mount on it . I would like to have as much material as I can to work with . The size I was pricing from steelexpress was 88.9mm x 19mm x 150mm long .

 

Sean

 

Edited By sean logie on 21/10/2017 16:26:59

[JohnFParticipant @johnf59703]

Sean, Try here **LINK**

It says they do cut to size, where I worked many years ago the company used to purchase form Le Bas Tube.
John

[sean logieParticipant @seanlogie69385]

Hi John I've had a wee look there .

Sean

[Involute CurveParticipant @involutecurve]

Ill have a look see tuesday we might have a lump that will suit.

[sean logieParticipant @seanlogie69385]

Posted by Involute Curve on 21/10/2017 18:24:36:

Ill have a look see tuesday we might have a lump that will suit.

[Neil WyattModerator @neilwyatt]

Sean… is this for a telescope mount?

Neil

[sean logieParticipant @seanlogie69385]

I’m not sure what you mean by Telescope mount Neil.

Sean

[Neil WyattModerator @neilwyatt]

Ah! you said you were welding the pipe to a mount with a bearing in each end – so I wondered if it was going to be a mount for an astronomical telescope – which would fit that description! Good ones have two sets of quality bearings at 90 degrees in a hefty framework.

Neil

[sean logieParticipant @seanlogie69385]

It's a vertical head I'm hoping to fabricate for the Centec 2 lol .

Sean

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