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wormil posted:Can't do that because it slides into another pipe. I would have to have an entire new arm assembly fabricated and that would be cost prohibitive, I think. Is the board wood? Is there much side load to it? Could you possibly make it out of wood yourself since it's only 30lbs? Another idea is you could get a piece of flat bar and a torch and bend it to shape in a vice then drill holes to screw in the board. Would cost next to nothing, plus you could do it yourself.
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Jan 14, 2012 10:12
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SmokeyXIII posted:Another idea is you could get a piece of flat bar and a torch and bend it to shape in a vice then drill holes to screw in the board. Would cost next to nothing, plus you could do it yourself. This- I don't know the function of the part you're designing or how exact it all has to fit together, but the bracket you're talking about is dead-freakin-simple to knock out. Like without having done any blacksmithing or anything, you could still probably do a pretty good job of it in 10 minutes with a propane torch, a vise and a heavyish hammer.
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Jan 14, 2012 17:01
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SmokeyXIII posted:Is the board wood? Is there much side load to it? Could you possibly make it out of wood yourself since it's only 30lbs? I made one from wood but it got bulky. I'll consider making it myself. I don't have any metal working tools, no vice, no torch, no big hammer but it might be worth the investment. Pricing them online, mild rolled is cheaper than aluminum plate but Al would be easier to cut. After thinking about it, 1/8" is probably overkill especially for steel. The bar itself is only about 1/16". So 12 or 14 gauge might be adequate.
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Jan 14, 2012 20:14
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Wormil: How about a few of these?  Z3n: I was in your shoes recently, and had to get up to speed pretty quickly. By far, the most useful reading material I found (and I evaluated a lot) was Machine Shop Trade Secrets, because what I really needed was context, so I could start to evaluate what I did and didn't know. It's a collection of tricks and specific situations that sort of shows a lot of different aspects of what you'll be doing. Also check out Victor Machinery for cheap-ish tooling and sometimes some weirder stuff.
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Jan 14, 2012 21:36
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King of Gulps posted:Wormil: How about a few of these? E: saw an aluminum v-block and the  started before i read up a bit, sorry carry on.Definitely. That's the hardest to learn part of machining. being able to cobble together a hosed up setup that works. Ask me about putting a vice up on a angle iron! Samuel L. Hacksaw fucked around with this message at 21:52 on Jan 14, 2012 |
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Jan 14, 2012 21:41
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Haha, yeah. But still, even if you use them for their intended purpose instead of as a half-assed adapter, there's something to be said for cheap, sacrificial tools in the spirit of Harbor Freight.
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Jan 14, 2012 21:49
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Would a short piece of angle iron work as a bracket. You could bend out the top to make a winged -v- shape
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Jan 14, 2012 23:25
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Get three piece of angle iron, weld them together like so:
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Jan 15, 2012 01:05
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Sponge! posted:Not Possible. 
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Jan 15, 2012 06:47
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Lord Gaga posted:Get three piece of angle iron, weld them together like so: Yeah, I have no welder or welding skills.
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Jan 15, 2012 10:44
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I thought that might be the case, hence the angle iron idea. You could even use a couple of wooden wedges. I'm rubbish at diagrams but the green bit is angle iron, shaded is wood. 
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Jan 15, 2012 10:48
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Woo went to my first class. 10 people underneath a railway arch in what looks like a homeless persons makeshift shed shelter with a suspiciously large amount of anvils. The lesson was very hands on- within 10 minutes we were bending a rod of mild steel into a spiral coaster. The teacher also made it very clear to us not to expect a career out of this. Great fun in all. I'll take some photos next week.
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Jan 17, 2012 11:32
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Metalworking tools: Woot! Picked this up from a closed school shop for $150. It is in great shape for its age and being around high school kids. Oldschool 1hp 3ph 12" Disc Sander made by Delta/Rockwell.     Then I found this later that day for $250. ($2200 new) I am trying to setup a time to go look at it with the guy, no idea which one I am going to keep.  
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Jan 17, 2012 20:57
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the spyder posted:Metalworking tools: Woot! I'm a bigger fan of belt sanders than those disc sanders. That belt sander for $250 is a pretty good deal. I'm sort of jealous, except I already have a monster belt sander that has an 10" belt on it. 
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Jan 18, 2012 15:37
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the spyder posted:That looks almost exactly like my sleazy rotary phase converter. Except I used an old alarm box.
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Jan 18, 2012 15:39
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the spyder posted:Metalworking tools: Woot!
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Jan 18, 2012 22:01
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This looks absurdly simple to do. I might try it. http://books.google.com/books?id=FigDAAAAMBAJ&lpg=PP1&pg=PA92#v=onepage&q&f=true
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Jan 22, 2012 13:17
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Sponge! posted:This looks absurdly simple to do. -every metalworker in the history of mankind, once.
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Jan 22, 2012 17:06
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Sponge! posted:This looks absurdly simple to do. I might try it. Speaking from experience from attempting exactly that, it isn't.
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Jan 22, 2012 18:35
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Blacksmithing is testicals
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Jan 22, 2012 19:01
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Antinumeric posted:Speaking from experience from attempting exactly that, it isn't. I've flattened and planished spoons before, and that's difficult enough. I hesitate to think how demanding the opposite process is.
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Jan 22, 2012 20:26
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Everyone likes pictures. Here are some pictures. I started on the mill last week. The first project was a rectangle! The second project is also a rectangle, but with features!  This is where I make the rectangles!  This holds on to the rectangles!
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Jan 22, 2012 21:32
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Dongsmith posted:Everyone likes pictures. Here are some pictures. Those are some beautiful rectangles.
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Jan 22, 2012 22:40
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I am so jealous of that table.
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Jan 22, 2012 23:28
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I'm getting married and this is my wedding ring. http://www.youtube.com/watch?v=NI2N6fsPjjg&feature=pyv&ad=9073092795&kw=kinekt%20gear%20ring A fully functioning mechanical ring; perfect for a metal geek like me.
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Jan 23, 2012 10:53
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duck hunt posted:I'm getting married and this is my wedding ring. I am wearing that same ring right now. Make sure you get it a size larger as it is quite big. It also takes a while (ive been married 3 months and its still bugging me) to get used to how sharp it is on your fingers. It makes a great conversation piece and its rediculously cheap too.
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Jan 23, 2012 18:53
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I measured my finger with my dial caliper (another metal geek thing to do) and converted in to metric to work with the sizing chart. The jewelry store said I wore a size 7 (arbirary units). So I ordered an 8. It really isn't clear if the sizing chart is for inner diameter or outer diameter. In the end it ran me 165 bucks shipped.
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Jan 23, 2012 20:11
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I have a somewhat hefty titanium ring from my wedding; I cannot get over the number of things I catch the damned thing in- I can't picture how much worse it would be with gears and non-smooth edges; even if that is a cool ring.
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Jan 24, 2012 00:12
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I decided to try engraving something; I bought a couple gravers a while back but never did much with 'em.  It's a bit of tin, labelled as such (tin's alchemical symbol). e: tin and pewter are awesome to work with but why does tin have to be so goddamn expensive 
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Jan 24, 2012 00:50
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That ring is so cool but knowing me I would get food stuck in it or who knows what else, not to mention my hairy fingers would get snagged in it all the time. Well that's how I imagine it happening anyways. Still, freakin' cool.
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Jan 24, 2012 02:36
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How can I transfer an image to metal? Tin/pewter in particular, just cause it's butter-soft and I feel like going graver-crazy. I don't mean like photoetching-level transfer, just a way of taking a simple silhouette or symbol and putting it on the workpiece. I was thinking of printing it out, soaking it with water and wheatpasting/gluing it to the prepped cleaned pewter and then just engraving straight through it, and then throwing it in pickle to eat the paper remnants away, but there's probably a less awkward method I don't know about. e: Welp, of course I don't google enough beforehand. http://www.ganoksin.com/borisat/nenam/photocopy_transfer_etch.htm seems pretty easy, but I don't know if it will work on tin (because it requires heating the piece with the overhead transparency pressed to it, and tin has such a ridiculously low melting temperature) and I'd probably acid-etch rather than grave copper because of the diminishing returns of manually graving vs. etching as the metal's hardness increases. Ambrose Burnside fucked around with this message at 03:16 on Jan 25, 2012 |
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Jan 25, 2012 03:08
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Ambrose Burnside posted:How can I transfer an image to metal? Tin/pewter in particular, just cause it's butter-soft and I feel like going graver-crazy. I don't mean like photoetching-level transfer, just a way of taking a simple silhouette or symbol and putting it on the workpiece. I was thinking of printing it out, soaking it with water and wheatpasting/gluing it to the prepped cleaned pewter and then just engraving straight through it, and then throwing it in pickle to eat the paper remnants away, but there's probably a less awkward method I don't know about. Laser print what you want, and IRON it on to the tin. The toner will melt and transfer with a hot dry iron.
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Jan 25, 2012 10:38
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Sponge! posted:Laser print what you want, and IRON it on to the tin. The toner will melt and transfer with a hot dry iron. I haven't had this work well at all for anything approaching fine detail. and when the toner does transfer, its incredibly fragile - like it'll fall off if you bump the piece hard.
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Jan 26, 2012 09:20
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Just throwing this out as an idea. To make chalk lines stay put on tile, spray aqua net over the lines. It dries fast and washes off easy. I got nothing helpful for fine detail.
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Jan 27, 2012 02:06
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rotor posted:I haven't had this work well at all for anything approaching fine detail. and when the toner does transfer, its incredibly fragile - like it'll fall off if you bump the piece hard. Huh, weird. It's a common technique for etching your own circuit boards, but that's on copper. I suppose other metals may not take the toner as well.
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Jan 27, 2012 02:24
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Just bought my first welder: $2600 all in including gas for: Miller Dynasty 200 Welder - 22 minutes on it, 40 arcs struck. Made in 2011, still has 4? years left on the warranty. Foot pedal 2 torches, both air cooled, one larger and one smaller with flex heads plus an assortment of different size collets, cups, gas filters, etc. Stick welding attachment Autodarkening welding mask half a dozen sets of gloves A bunch of assorted tungstens a bunch of assorted filler rods Manual/registration card/etc Regulator/hoses 15 pounds or so of assorted blocks of aluminum/steel/stainless to practice with I think I did pretty well...just need to check the plug configuration, get an extension cord, and buy a bottle of argon and I'll be up and cooking. Still left to buy to get the garage fully outfitted: Bandsaw, Lathe, and belt sander. Slowly but surely I'm getting there 
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Jan 28, 2012 05:15
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If you rub a cloth lightly dampened with acetone over the back of a laser printed image it will transfer to the metal beneath it.
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Jan 28, 2012 15:41
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What about just using a permanent marker to draw what you want to etch?
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Jan 28, 2012 22:48
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https://www.youtube.com/watch?v=JPoT9ZfqUic 3 minutes or so in, teaching Trevor to weld.
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Jan 29, 2012 22:44
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Bogatyr posted:https://www.youtube.com/watch?v=JPoT9ZfqUic Oh my dear lord. You know as I keep watching this it reminds me of my dad a lot.
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Jan 29, 2012 23:20
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