simonr Posted December 29, 2014 Share Posted December 29, 2014 Some of you will have been following the thread http://forums.lr4x4.com/index.php?showtopic=89125&hl= about building a DIY CNC Plasma Table. Out of the thread (plus a few years thinking about it) grew a design which I had laser cut and have successfully built in to a pretty good machine! Several people asked if I could produce one as a kit? The answer is 'kind of'! Most of the Electrickery is available at low cost on eBay and the like so I have put together a bill of materials including where I bought said item from. My involvement in it is just the design and sourcing the laser cut parts. The price of the laser cut parts depends on the number cut. I'm not doing this as a commercial enterprise - the cost of the parts is just what I'm being charged inc VAT and delivery from the cutters to me. The quote from the Laser Cutters was as follows: 1 set - £38010 sets - £20050 sets - £150 The design has evolved a little from the original set I had cut just to make bits of it work better. I suspect that the revised design will add no more than 10% to that. The purpose of this thread is just to see if there is sufficient interest to get a set (ideally 10 or more) made? If you are interested, post below. These are the pictorial assembly instructions. I decided to make them on Solidworks for clarity - and so I wouldn't have to dismantle my machine. Sorry about the picture overload - but it gives at least an idea of the work involved in building the mechanics at least. I'll post the bill of materials once I've updated it. Excluding the Plasma Cutter & PC to run Mach3 Software, the whole thing will cost about £600 to £650 including the laser cut bits. If you are looking at this as a guest of the forum and thus cannot post, mail me on simon1@psi-design.co.uk instead. Si Quote Link to comment Share on other sites More sharing options...
aniesigh Posted December 29, 2014 Share Posted December 29, 2014 Why do these things happen at bad financial times for me! So your costing is for laser cut parts, on top of that to complete would be mechanical hardware (nuts bolts etc etc) plus the electronics? i stopped following the thread as i couldn't keep up with it! i'm assuming its belt driven, what size is it? 1 Quote Link to comment Share on other sites More sharing options...
Lewis Posted December 29, 2014 Share Posted December 29, 2014 I'm interested at the 10x or 50x price bracket Edit: forgot to ask - is it scaleable? Can I used longer lengths of box section to cut full sheets? Being able to cut 8x4 or 10x5 would be handy Quote Link to comment Share on other sites More sharing options...
ballcock Posted December 29, 2014 Share Posted December 29, 2014 I've been following the thread with interest, and would be tempted with a set myself @ the 10 or more figure. Even allowing for postal charges on top it sounds good value considering what I waste on Land Rover parts at times. Quote Link to comment Share on other sites More sharing options...
zim Posted December 30, 2014 Share Posted December 30, 2014 Yes I'll be up for one. G Quote Link to comment Share on other sites More sharing options...
simonr Posted December 30, 2014 Author Share Posted December 30, 2014 I'm interested at the 10x or 50x price bracket Edit: forgot to ask - is it scaleable? Can I used longer lengths of box section to cut full sheets? Being able to cut 8x4 or 10x5 would be handy Yes - the box section and drive belt can be pretty much any length within reason. I chose this size partly to fit in my workshop and partly because you can make all the bits out of a single 6m length of box section. It gives me a cut area of 700mm square.On top of the laser cutting you need: 50x50x1.5 wall box section to suit size of table (X travel + 150mm) x 2 + (Y Travel + 150mm) x 3 + Z travel + 100mm roughly. 20x20x3 Angle (Y Travel + 100) x 2 20x20x3 Angle for bed runners (X Travel + 100) x number of runners M6 studding - length of box section + 1m M12 studding - 300mm 8mm Bright bar (Y Travel + 300mm) 8mm shaft collars x 2 IGUS 8mm bushes x 8 M6 x 20 bolts (about 50) M6 x 25 bolts (about 10) M4 x 20 bolts (about 40) M6 Plain Nuts (about 30) M6 Nyloc Nuts (about 50) M4 Nyloc Nuts (about 40) M12 Plain Nut x 1 15mm x 5mm pitch timing belt - to suit size of table. 6x Torsion springs to tension belt (I have about 90 left) 29mm Steel V Roller bearings x 16 21 tooth 5mm pitch 20mm wide belt pulleys x 6 19x6x6mm bearings x 4 2x 4Nm stepper motors 1x 1Nm short stepper motor 3x Stepper drivers 1x Break out board 1x Old PC Running XP ideally. The above is just from memory so I've likely forgotten something - I'll list the full BOM when I'm at my PC. Si Quote Link to comment Share on other sites More sharing options...
WHO4 MUD Posted December 30, 2014 Share Posted December 30, 2014 I would be interested in a set. Quote Link to comment Share on other sites More sharing options...
B reg 90 Posted December 30, 2014 Share Posted December 30, 2014 Simon, I'd go for a set as well. Adrian Quote Link to comment Share on other sites More sharing options...
Blanco Posted December 30, 2014 Share Posted December 30, 2014 Plus 1 for a set please. Quote Link to comment Share on other sites More sharing options...
simonr Posted December 30, 2014 Author Share Posted December 30, 2014 I've uploaded a 3D model of it here https://grabcad.com/library/diy-cnc-plasma-table-1# If you click on 3D View, then on the file shown - it will open a version you can explore in 3D. Si Quote Link to comment Share on other sites More sharing options...
De Ranged Posted December 30, 2014 Share Posted December 30, 2014 I've been watching the other thread, I would be keen but the cost of the freight for me would make the savings on multiple cuttings look minimal.... bit of a person I'm not that keen on living on the other side of the world lol Quote Link to comment Share on other sites More sharing options...
Ruuman Posted January 1, 2015 Share Posted January 1, 2015 I would take a kit at the 10x price bracket, funds are a little short at the moment. thanks Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted January 1, 2015 Share Posted January 1, 2015 Need to do some reading up, but yes very interested ! Nige Quote Link to comment Share on other sites More sharing options...
zim Posted January 2, 2015 Share Posted January 2, 2015 Nige, if you get involved the Written Risk Assessment just gets much to complicated !!! G Quote Link to comment Share on other sites More sharing options...
moose Posted January 2, 2015 Share Posted January 2, 2015 Count me in Simon I would be interested as well. Paul Quote Link to comment Share on other sites More sharing options...
Bingy Posted January 2, 2015 Share Posted January 2, 2015 Another one up for a set Simon John Quote Link to comment Share on other sites More sharing options...
simonr Posted January 2, 2015 Author Share Posted January 2, 2015 That's pretty close to 10. I still need to do a bit of work on it to produce a decent bill of materials with suppliers etc. It might be possible to get someone supply all the steel in pre-cut lengths. I guess the trouble is, everyone will want different table sizes! Although mine at 70cm square (cut size) might seem a bit small, You can feed in a sheet from the side and cut a bigger part in several goes so long as you can reference the parts accurately. I had figured the way to do this is to accurately drill a series of small holes in the sheet in a line 70cm apart then use these to set the X=0, Y=0 point for successive cuts. However, to date the largest thing I've ever wanted cut was only 60x60cm - hense the 70x70 table size. Some of the videos on line have used a laser cross hair projector to set the zero reference - which seems like a good idea to me! A project for another day though! Si Quote Link to comment Share on other sites More sharing options...
zim Posted January 2, 2015 Share Posted January 2, 2015 I think if space permits a bigger bed would be nice. Let us know when you require a deposit so you can get definite numbers. G Quote Link to comment Share on other sites More sharing options...
simonr Posted January 2, 2015 Author Share Posted January 2, 2015 It probably makes most sense for people to source & cut their own box section. I guess if you are interested in a cutter - you probably have a source for steel section anyway! Si Quote Link to comment Share on other sites More sharing options...
simonr Posted January 3, 2015 Author Share Posted January 3, 2015 Bill of Materials: Plasma Table BOM.pdf Si Quote Link to comment Share on other sites More sharing options...
Ruuman Posted January 3, 2015 Share Posted January 3, 2015 Good clear list Simon, thanks for all the effort you have put in. Quote Link to comment Share on other sites More sharing options...
simonr Posted January 3, 2015 Author Share Posted January 3, 2015 I've realised there are a couple of non critical items missing - but they only add about 2.50GBP to the total! Si Quote Link to comment Share on other sites More sharing options...
robertspark Posted January 3, 2015 Share Posted January 3, 2015 Springs? Quote Link to comment Share on other sites More sharing options...
discomikey Posted January 4, 2015 Share Posted January 4, 2015 I'll message me mate, I can't afford one but he probably will be interested for his business, see what he says. Quote Link to comment Share on other sites More sharing options...
simonr Posted January 4, 2015 Author Share Posted January 4, 2015 Springs? Actually, I'd figured on just chucking the springs in with the laser cutting. It was the support for the torch cable - which is made from the same 8mm bright bar as the axle that transfers the drive between the two sides plus one 8mm shaft collar. You'll probably have the 8mm bar left over if you've bought a whole length of it and the collars cost about 2.50GBP Si Quote Link to comment Share on other sites More sharing options...
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