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Discussion Starter · #1 ·
"I am a Bear of Very Little Brain" (Anyone who knows me, - also knows that...)

But I read & hear Amazing things are being done with these 3-D Printer thingies ...

Perhaps a thread to keep us all up to date with the Techno stuff might be good ?

Over to You lot ...
 

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Discussion Starter · #3 ·

this is the First thing that popped up on a 'net search... we all saw the Gun the chap made in the USA (typical) - but I hear of BODY parts too !? :beuj:
 

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hello, IF you plan on making a cnc plasma then the software is now real cheap

design stuff in corel draw or illustrator - export as .hpgl , rather than autocad and .dxf
corel you can buy on ebay at reasonable prices

firstyly download the mach3 demo = .tap files that drive the motors in the cnc machine
down load from here - they take pay-pal
Machsupport Forum - Index - price is £120

confusion arrises as you need to convert the .hpgl or dxf into 'machine code tool paths' before sending it to mach
you need sheetcam, its a 'if you like' 2.5 D program, i.e. not a 2d or 3d but inbetween
down load here - its £120 - they take pay-pal
sheetcam.com :: Index

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so thats your software taken care of for £350
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then go and buy a cheap plasma and compressor.
now proceed to making your plasma table, you will need 3 motors 3 drives and a power supply psu,
you need 3 motors and drives
separate drives - do not buy the 3 combined drives
3axis Nema23 stepper motor 425oz-in Dual sahft driver CNC Machinery - GER based | eBay

throw away the parrallel port break out board and spend another £100 on a USB leaf boy cnc bob = break out board. go to the leaf boy website and go through the set up process!!
3 Axis CNC USB Card Mach3 200KHz Breakout Board Adapter For Stepper/Servo Driver | eBay
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step one
connect the motors to the drives and then to the psu.
connect the usb bob.
connect to computer
using the trial free download (its limited to 500 lines of code so you cannot cut a full job on both programs)
for both MACH3 and SHEETCAM draw a circle and whatch the motors turning,

now you need ball screws and slides, read up as this is the difficult part, try and stick with 16mm diameter shafts with a 5mm thread pitch, you need to spin one end of the shaft to 8mm for the motor coupler
you will need 4 8mm to 8mm cnc couplers YOU MUST GET THIS TYPE.
New Kinds 5/6/6.35/8/10mm CNC Flexible Plum Coupling Shaft Coupler D20 L30 | eBay
THAT PUSH TOGETHER, to aid motor removal and refit
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try and get 8 wire nema motors rather than 4
you must use sheilded wire to the motors
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if you are new to it all start with a 2 foot square machine, the bed will need to be 2.5 foot by 2

with a plasma you cannot have a central x-axis ballscrew as it will get spatter on it - so you may need 4 motors instead of 3, get 4 anyways one for spares.
you might not even need a z-axis at all for plasma

cnc is now relatively cheap. GO AND BUY THE BITS as abovespend the 200 on motors and 100 on a usb bob
download the demo's and for 300 sovs you will literally be doing cnc computer numerical control.

thank you
oh. p.s., the very idea of making a cnc machine with pay-pal might appeal to you, get selling stuff to pay for it all!!!!

uk cnc forum
http://www.mycncuk.com/forums/forum.php

table top
= floor grate
http://www.ebay.co.uk/itm/1170-X-10...aping_Garden_Materials_ET&hash=item2339594691
1000mm by upto 2m,

with regards the table, you don't need it to be as heavy duty as a cnc with a 2000w spindle as you are only merely pulling around a plasma torch
look here
http://www.ebay.co.uk/itm/THE-OX-MA...ies_Carpentry_Woodwork_ET&hash=item51ba3c5980
its a bit new fangled but notice the sides are flat, it really doesn't need to be so stiffas you do not need to lift the weight of the z axis motor of a conventional cnc - heavy like twp starter motors, plus the actual frame doesn't need to resist the torque of the cutting head, as you are burning down rather than spinning and milling.

anyways, the new fangled way is the wheels in the track extrusions, note here there are no linear bearings!!!! = simple
 

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Pretty amazing stuff, anybody any idea of the costs involved I am guessing you could buy a new adjustable wrench cheaper than they could replicate one, I am aware that was just to demonstrate the machines capabilitys really impressed that it prints objects that normally would be made in seperate pieces all in one hit and they actually work very clever stuff.
 

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Pretty amazing stuff, anybody any idea of the costs involved I am guessing you could buy a new adjustable wrench cheaper than they could replicate one, I am aware that was just to demonstrate the machines capabilitys really impressed that it prints objects that normally would be made in seperate pieces all in one hit and they actually work very clever stuff.
I would guess they are mainly used to prototype.

that way no big machining costs for one of parts.

the benefit of having something like this is huge.if you make something,try it,it doesn't work,its easy to reprogram and print the next version.

nobler what are you on about.this is about 3d printers not plasma cutting
 

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Just to really take this orbital,we had one doing a demonstration at an exhibition from a specialist we all look at this and go wow this is amazing he then proceeded to tell us that they have protein on a roll and are now experimenting successfully printing body parts mainly kidneys and livers !!!
 

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Lurking Loon
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One of the hobbyist machines was planned around that; uses an aluminium extrusion frame, joined by 3D printed parts. So you have to buy stuff like the extrusion, slide rails, and whatnot off the shelf; and have a mate print out the pieces to join it together.

I suppose you could put one together that used a frame made of interlocking 3D printed parts...
 

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Went for a trip round an upper school recently and there were 13 year old's designing stuff using Solid Works (3D CAD software) and printing the results using a 3D printer... Really impressive.

You can get a 3D for under £500 (+vat) now. More for hobby use I suspect but it's going the same way as Mobile phones and all other electronics (cheap as chips).

K8200 - VELLEMAN KIT - 3D PRINTER, K8200 | CPC
 

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richard rawlplug
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Gary your way behind the times...fax machines are the new thing..

post a letter in the slot..ring someone up on the telephone..presto one threat letter to whoever you want..

I heard about this internet thing also..but I'm not into fishing.
 

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3D printer is a gateway to endless opportunities. Some 3D printing hobbyists I know have increased their profits by 50% simply by integrating 3D printing in their business operations. My colleague Steven has his own shop making personalized items like car parts and dainty stuff. Prototyping saves almost half of your overall production time and material costs thus yielding higher ROI. I've recently ordered several smartphone cases with him made up of this rubber-like filament. Imagine, he just 3D printed it in less than hour! It could have been weeks if I asked for a private manufacturer to do my orders.
 

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