The ratcheting style like https://www.google.co.uk/search?q=sheet+metal+ratchet+cutter aren't throatless so the frame is more likely to get in the way when cutting say an inside radius. AFAIK they're all sold as having a 1.5mm / 16swg mild steel capacity and all of 'em have serrated cutters (for...
FWIW ammonium persulphate is a common alternative to nital/nitric acid for example http://www.etchantstore.com/media/A36%20weld.pdf AFAIK(?) it's not on controlled substance lists etc and isn't spendy difficult to find from the usual suspects including the bay as a PCB etchant etc. Mixing...
Might have already seen it but there's some links in this thread which cover most of the sciencey aspects but it's much art as science imo http://www.mig-welding.co.uk/forum/threads/quenching.73182/#post-999692 Bit trickier with Al 'cause you can't judge temps by just paying attention and it's...
Good point, large ally structures are way more prone to distortion than smaller/lighter stuff that quickly get heatsoaked when welding. Have you tried spot heating/flame shrinking to fix 'tin canning' of table tops when shrinkage of the frame/perimeter has left 'em baggy in the middle?
AN / JIC dash fittings are based around rigid hardlines because their sizes were already standardised. The AN numbers refer to the OD of the matching tube in multiples of 1/16" so a -4 is 1/4" (4/16"), -8 is 1/2" (8/16") etc. Hoses follow the same principle in that -4 fits -4 etc but the ID of...
Austenitic stainless can be a bitch for severe local distortion because it has a higher thermal coefficient of expansion than mild steel but lower thermal conductivity. Coefficient of expansion of aluminium is about double that of mild steel but it's thermal conductivity is waaaaaaay (4 - 6...
Chances of finding an old Beverly/top quality throatless shear are slim to none, i hunted for ages before giving in to a new cheapnese copy and am still looking for a genuine Beverly B2
Old bench shears like the Elliot Samson mentioned or Keetona etc are much easier to find but different...
I wouldn't pay too much attention to the advertised cutting capacity personally... AFAIK they're all a cheapnese copy of the smaller (model B1) Beverly shear and i'd wager the only difference between a 1.5mm and 2mm mild steel capacity version is the sellers claims and the colour it's painted...
Don't worry about pics/screen grabs, if that's what WIS states fair enough i believe you. Just sounded more like hub run out specs to me given how small the numbers are... dunno what the hub runout tolerances are for newer MBs but unless it's a chunk less than 0.03mm lateral then could have a...
0.03mm lateral, 0.05mm radial sounds more like run out specs for the hub flange to me? Certainly matches the max hub run out for MBs from the '90s (top of pg 2)... http://www.w124performance.com/service/w124CD2/Program/Chassis/33-0010.pdf
Disc specs (once fitted at least)* typically only mention...
Argoshield has both CO2 (5, 12, 20% for light, universal, heavy) and 2% O2 in it and while they do different things CO2 has an oxidising effect...
Never heard of Ar / 5%O2 not that that means much, i'm guessing it's mostly about spray transfer (reduced droplet size & surface tension)? @backpurge...
Chucking water over the part when you've finished welding won't but flame straightening (or bending, heat shrinking etc) works on pretty much any weldable* metal. Obviously material properties (thermal conductivity, co-efficient of expansion etc) effect technique etc, how well it works and how...
It's very different to aluminium. Kinda* similar to stainless... weldpool has a slightly different consistency (honey is common description) and the wire has a tendency to stick to it, especially if you catch the edges of the pool. When this catches you out the first few times you either end up...
Pretty much, yeah. Forgot to mention that you won't get the full deposit back if/when you don't want the cylinder anymore, can't remember how it works with hobbyweld but IIRC they just deduct an "admin fee"? It'll be explained on their site somewhere
Fill pressure effects how much gas you can cram into any given volume/cylinder size... when a 300 bar bottle is showing 150bar on the regulator it's "effectively" half full
A lot depends on the material and obviously a using a wet rag /misting the part is very different to dumping a bucket of ice cold water on it
Mild steel doesn't have enough carbon in it to be hardened or tempered so will react to quenching very differently from med carbon steels or alloy steels...
At least one of the rent free suppliers offers stainless mixes for MIG/MAG (He/Ar/CO2 tri mix and 98/2 Ar/CO2) as well Ar/He mixes for ally etc for example https://www.hobbyweld.co.uk/products/hobbyweld-982/ Dunno if refill prices are set by agents or Hobbyweld but...
I was asking Gaz if there any writing on his (seemed pointless quoting the post directly above hence the ^^ instead). I saw the pic of yours (and the thread title) hence only mentioning k3 and k3c keys.
^^ Is there any writing still visible on the chuck body? The dia of the hole for the chuck key pin is often enough but there are a few variations in the size of the pinion (dia, # of teeth, their profile etc), with the model number can use a cross reference chart most of the time, without that...