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Metalworking questions in this section please

 [ Total topics 317 Go to page 1, 2, 3, 4, 5 ... 32

 Post subject: Is aluminium ok for this project?
PostPosted: Sun Oct 15, 2017 12:55 am 
I am converting a small petrol motorbike to electric for my young son. It will be powered by a hub motor ( the motor is actually the hub of the rear wheel.) The hub spins around but the axle cannot itself spin, it is static. The ends of the axles are flattened as in one of the attached photos and the plates that go over the ends of the axle have the same shape ...

Read more : Is aluminium ok for this project? | Views : 181 | Replies : 12

 Post subject: Best way to cut a small square from metal-paneled door?
PostPosted: Tue Aug 15, 2017 4:44 pm 
Hello peeps :-)

Short version:
What would be the best way to accurately cut a small square (41mm x 41mm) from the inside panel of a metal-paneled door?

Considerably longer version:
I have project in the pipeline where I will need to cut a small square out of the inside of a metal-paneled fire door. This will enable me to insert a network camera in place of ...

Read more : Best way to cut a small square from metal-paneled door? | Views : 604 | Replies : 11

 Post subject: Yellow rainbow metal identity
PostPosted: Mon Jul 24, 2017 10:27 am 
These angle brackets are purportedly made of "metal". Can the composition be further narrowed by inference from the appearance?

Read more : Yellow rainbow metal identity | Views : 526 | Replies : 2

 Post subject: How to connect end of aluminium tube to steel strip
PostPosted: Sat Jul 22, 2017 3:10 pm 
I've made a spotlight for video recording out stuff I happened to have lying around (it looks jankier than you can imagine) but I'm stuck on the final part which is the means to attach it to a light stand. I made a bracket (of a sort) out of some bent strips of metal and I need to attach this bracket to a short piece of aluminium pole but I can't figure out how. The ...

Read more : How to connect end of aluminium tube to steel strip | Views : 273 | Replies : 3

 Post subject: Ball mill container help.
PostPosted: Fri May 26, 2017 6:30 pm 
Can anyone figure on a way for me to get 2 of these
without having to pay £400? :scratch:


I gather these are made by taking a solid stainless steel billet and then lathing them hollow
and then lathing an insert cap. Great, only I wouldn't pay £400 for it in a million year's.

The only thing is it need's to be stainless steel and will ...

Read more : Ball mill container help. | Views : 668 | Replies : 5

 Post subject: what size and type of tube for a cattle grid?
PostPosted: Mon May 08, 2017 6:26 pm 
what size and type of round tube for a "cattle grid?"
Not really a cattle grid but will be laid on the ground and driven on so most of the bar will have support
along its length. Reason for metal tube, less likely to damage when drivers are stationary and turn steering wheel.
Will be driven on "occasionally", say 4 times a day at 5mph

Needs to support 2 tonnes over 6ft to 8ft span. ...

Read more : what size and type of tube for a cattle grid? | Views : 384 | Replies : 7

 Post subject: please help - iron/metal gate
PostPosted: Thu May 04, 2017 12:05 pm 
Hi all,

I have a balcolny that looks out onto our communal garden. Everyone else has a little latch put in to open out onto the grass. Ours has been painted over. My dad managed to free to top two bolts but i am left to finish the job myself and dont know how to do it!

I have a tool box and some dw40. ill attach some pics. I just want to be able ...

Read more : please help - iron/metal gate | Views : 383 | Replies : 3

 Post subject: Applying Zinc spray (cold galvanising)
PostPosted: Wed May 03, 2017 10:28 am 
Can I apply zinc spray directly onto rust?

We have galvanised gates and railings but some of the fixing bolts were not galvanised or have become damaged and we have a bit of rust on them. Can I apply zinc spray directly onto the rust or will it just flake off? In the past I have only ever used it on bare metal. I know I should really de-rust first but it will be a ...

Read more : Applying Zinc spray (cold galvanising) | Views : 465 | Replies : 12

 Post subject: How to remove red oxide primer from a steel beam
PostPosted: Mon May 01, 2017 10:38 am 
I am having a rear extension done and one of the beams that is going underneath the rear opening is to be incased in concrete. This beam needed to be left unpainted as per structural drawings and the engineer is adamant about this. I believe it has something to do with concrete being able to bond with steel but not with primer, hence this will affect the strength.

This beam is a UC 203mm x ...

Read more : How to remove red oxide primer from a steel beam | Views : 344 | Replies : 1

 Post subject: Plasma cutter?
PostPosted: Tue Apr 18, 2017 5:41 pm 

Having recently been cutting lots of metal I'm finding using the big angle grinder and hacksaw to be hard work so I'm looking for a suitable alternative. I've used metal cutting band-saws which are accurate but slow; Rapidor power hacksaws and also many years ago used oxy/acetylene but these days I notice Plasma Cutters are readily available through eBay at very reasonable prices starting for as little as £130 new.

I've absolutely no knowledge ...

Read more : Plasma cutter? | Views : 812 | Replies : 18

 [ Total topics 317 Go to page 1, 2, 3, 4, 5 ... 32

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