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 CAD, CAM, CNC etc. 
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Joined: Tue Nov 24, 2009 7:55 am
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Location: UK
Post Re: CAD, CAM, CNC etc.
Kit, another potentially useful site http://www.cnccookbook.com/index.htm
http://blog.cnccookbook.com/2014/05/06/6-things-a-brand-new-cncer-should-do-to-get-started/

Sadly no temperature / pouring speeds available but the plasma cutter info might be useful for fabricating the furnace ;)

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Tue Jul 21, 2015 6:43 am
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Location: Exmouth, Western Australia
Post Re: CAD, CAM, CNC etc.
Mike,
Some very interesting stuff on that website, thanks for the links.

After the recent interlude of purely arty creativity, I'm back to building the CNC machine. In between keeping up with the growth rate of my tomatoes and the Triffid-like weeds that have appeared after a recent downpour :-)

Kit


Wed Jul 22, 2015 4:56 pm
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Post Re: CAD, CAM, CNC etc.
Kitwn wrote:
Mike,
Some very interesting stuff on that website, thanks for the links.

After the recent interlude of purely arty creativity, I'm back to building the CNC machine. In between keeping up with the growth rate of my tomatoes and the Triffid-like weeds that have appeared after a recent downpour :-)

Kit


I thought the same about the site, if you subscribe they send a weekly? email for a while with links to the most popular article.

Look forward to seeing the fruits of the CNC build. I have a machine coming from US, converting to CNC to go along side my small lathe.

Weeds, if only the were all edible............. ;) It would save all that digging and planting.

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Thu Jul 23, 2015 9:34 am
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Post Re: CAD, CAM, CNC etc.
This may be handy for those heading down the Design Spark / Cam Bam route http://www.rs-online.com/designspark/el ... m_content=


Mon Jul 27, 2015 4:47 am
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Post Re: CAD, CAM, CNC etc.
Kit, another useful information source, sign up for the CNC crash course via the sidebar fly out. http://www.grzsoftware.com/

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Sat Aug 01, 2015 11:09 pm
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Post Re: CAD, CAM, CNC etc.
onshape CAD (Free) and Pro : https://www.onshape.com/

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Thu Aug 06, 2015 10:44 am
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Post Re: CAD, CAM, CNC etc.
Mike,
Thanks for those links. I've signed up for the cnc crash course.

I have at last received an interface card and stepper drivers after one Chinese supplier took nearly 2 months to tell me they couldn't supply what I'd ordered. I've loaded up LinuxCNC and can now make the motors move! Can't comment on how it compares to MACH3 (I'm assuming the v3 copy that came with the interface board is not fully licensed).

Fusion 360's cloud requirements don't suit my purposes and I find DesignSpark Mechanical easier to understand anyway. It looks as if CamBam is the obvious way to link them together, and design simple parts from scratch, even if it does cost a whole month's hobby allowance!

The router is coming on. Some slight delay while I wait for new roller bearings to arrive from MakerStore, the cheapy Chinese ones I started with are a bit too cheapy to carry the full size router I'm now using instead of just the Dremmel.

Kit


Thu Aug 06, 2015 11:40 pm
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Post Re: CAD, CAM, CNC etc.
Kitwn wrote:
Mike,
Some very interesting stuff on that website, thanks for the links.

After the recent interlude of purely arty creativity, I'm back to building the CNC machine. In between keeping up with the growth rate of my tomatoes and the Triffid-like weeds that have appeared after a recent downpour :-)

Kit

western aus must be vastly different to stanthorpe in qld then. frosts have killed nearly everything.... then it snowed that finished everything off lol . still it might mean less bugs around in spring perhaps. nothing like a north american or european winter .still pretty impressive for queensland.


Fri Aug 07, 2015 1:09 am
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Post Re: CAD, CAM, CNC etc.
Hi, Kit, Chardie, Plenty of bugs despite the overwinter frosts here in UK. Good to hear progress on the CNC front. I just got message this morning, DHL have picked up my machine for transport to the UK. I am using CamBam and Mach3 driving a Leadshine MX3660 3 axis driver for now.
Got the motors moving also and have "Air" machined a few parts, good thing about that approach is no tool breakage ;)
Still a couple of thousand miles between the machine and motor coupling at present :-)
A long way to go before producing anything approaching D1's work ;)

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Fri Aug 07, 2015 1:47 am
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Post Re: CAD, CAM, CNC etc.
Dont worry it comes quickly but yes be prepared to break a few bits . Buy cheap at first ! Take it easy i only usually cut at .4mm layers and a slow speed . Never in a rush tend to set it going and go do a bit of gardening :D
D1


Fri Aug 07, 2015 2:11 am
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Location: Merritt Island, Florida, Estates Unitas
Post Re: CAD, CAM, CNC etc.
We used to have some big mills that had a real neat tool cooling system.
A flexible hose was attached to the mill with a little nozzle that could be positioned next to the cutter.
Compressed air was allowed to flow through a restricting valve and constantly blew on the cutter.
There was also a water hookup with another valve that let about one drop per second go into a Y connector
and then on to the nozzle. It was very effective and didn't throw coolant all over the place.
There was just this steady stream of cool air and water mist. The mess stayed right by the cutter.
When adjusted right, we never had to clean up water because it evaporated as fast as it was sprayed.


Fri Aug 07, 2015 5:45 am
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Post Re: CAD, CAM, CNC etc.
Exmouth, WA is 21.5 degrees South, so Winter here is not unlike an English Summer with highs in the mid 20s. Christmas gets a bit toasty though. Temperatures head into the high 40's in early January so the main veggie season here is the same months as the Northern hemisphere, while it's cool enough!

I've actually had a motor running using the 'test axis' buttons in LinuxCNC so that's encouraging, and the latency test gives me nice low results on the dedicated PC. I'll take note of the starting with cheap tools advice.

I've looked into Minimum Quantity Lubrication (MQL) systems. There's an interesting video at https://www.youtube.com/watch?v=aP3glc4HoWg
These are very similar to what you describe James, but inject a special lubricating oil instead of water. I spoke to the Australian agent for the company in the video. A basic pump and nozzle set is over $1000 and their oil is over $200/litre so I'm going to try the principle but not their products. You don't need much air either so I think my airbrush compressor should be OK.

Kit


Fri Aug 07, 2015 2:45 pm
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Post Re: CAD, CAM, CNC etc.
You may be interested in this stoned guy's DIY misting system.
Its basically what they sell for $1,000 built for $50
WD 40 works instead of their fancy plant oil
Water is even cheaper and greener.



Sat Aug 08, 2015 7:02 am
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Post Re: CAD, CAM, CNC etc.
I don't know if you intend to work on a lot of steel, or rather the odd piece or two. At my lathe turning course, we simply used a coolant applied by squirting from a plastic bottle with a nozzle and it was fine for the steel pieces we worked on, around an inch in diameter.

For aluminium you don't really need coolant, a squirt of WD40 on the final pass for a lovely finish at most, but if you use the best quality carbide end mills for aluminium they last forever and cut nice and clean on my mill with no evidence of machining marks on the last pass, no coolant. I use a bit of WD40 on large holes, to prevent the bit from binding.

Edward


Sat Aug 08, 2015 2:23 pm
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Post Re: CAD, CAM, CNC etc.
For those who want to hand finish their aluminium handy work:

I have to polish some pieces to a mirror finish as some CNC pieces have small milling marks. I use the type of emery sandpaper with a cloth base, various grits, but mainly bn grit 240. it lasts considerably longer than normal paper based sandpaper and it's more pliable, so better for getting in round corners.

After that I use the wonderful Scotch-Brite fine pads in Maroon colour, they are wonderful for a nice finish prior to mirror polishing. No machinist should be without them.

There is something rather therapeutic about sanding and polishing. It's also very rewarding to see the final finish. I am doing this prior to anodising, since I don't seem to find anyone who wants to do it for me. It's time consuming.

Edward


Sat Aug 08, 2015 2:42 pm
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Post Re: CAD, CAM, CNC etc.
James,
Thanks for that link. I've seen a similar, but even simpler to make, system that uses two separate 1/8 tubes that sit side by side all the way to the tool, but don't form the same kind of atomiser as shown in the first example in the video. I had thought about modifying a cheap airbrush but that would create the same airbourne droplets problem this design is intended to avoid.
Some useful info on fittings and I like the way his system is mounted.

edward,
I've read conflicting opinions on the need for coolant/lubricant when cutting Aluminium. Considering the cost of decent tools, I'm going to err on the side of doing my best to look after them. I already have an airbrush compressor and some lengths of 1/8" brass tube so I can start playing with a design.
I don't plan to cut steel with the current MDF framed design of machine but who knows what the future holds once I've started using this machine to build others?

Kit


Sat Aug 08, 2015 6:56 pm
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Post Re: CAD, CAM, CNC etc.
Cutwel Tools doing discount through August on cutting tools, http://www.cutwel.co.uk/ Also supply a substantial
paperback catalogue if you want one for bedtime reading :-)

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Sat Aug 08, 2015 9:25 pm
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Post Re: CAD, CAM, CNC etc.
Another useful site, CAD files http://www.tracepartsonline.net/%28S%28js5hiw5lacinb0v2synfulcr%29%29/content.aspx?home=1&class=TRACE

D1,
Igus slew bearing files here: http://www.tracepartsonline.net/%28S%28js5hiw5lacinb0v2synfulcr%29%29/content.aspx?SKeywords=slew+bearing&SDomain=3&st=4&sa=0&Class=TRACE&clsid=%2FROOT%2F&ttl=I.C.S+TraceParts+classification :-)

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Sun Aug 09, 2015 12:57 am
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Post Re: CAD, CAM, CNC etc.
Hi Mike yes is use Traceparts very handy and it saves a lot of time building things in Design Spark. Nice how theirs a specific export for DS to so no corrupted files .
On the lubrication front i to use WD40 its relatively cheap and you can get it any ware.
I made i little drip dispenser out of a old tin can so not the most expensive mill adaption :D
[flickr]Image2015-08-09 12.16.05 by D 1, on Flickr[/flickr]


Sun Aug 09, 2015 3:39 am
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Post Re: CAD, CAM, CNC etc.
Love it!

That's all you need, a little drop of WD40 now and then. Some people use paraffin. Even soapy water. Unlike steel, for aluminium you need lubrication, not coolant. Aluminium doesn't get hot like steel does.

Ed


Sun Aug 09, 2015 12:20 pm
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Post Re: CAD, CAM, CNC etc.
That's my kind of technology!

When designing anything, it's important to understand that you should use the APPROPRIATE technology for the circumstances. For us hobbyists this is rarely the latest and never the most expensive.

Kit


Sun Aug 09, 2015 5:42 pm
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Post Re: CAD, CAM, CNC etc.
Taig Milling machine arrived (UK home) in good condition Thursday after it was dispatched St Louise last Friday. Had to complete a
Customs declaration form for import duty, luckily in my misspent working life I had occasion to work with the associated coding
system, much easier now with all the info on line, 5 minute job and DHL did the rest.
Mill is unpacked and a suitable space in the heated part of workshop cleared, once mounted on a bench I will sort out the shielded wire
lengths for the steppers and get it ordered. Also look at transparent front guard as my young nephew has a keen interest in using it.
Hope to get it aligned and be up and running and breaking tools sometime in next couple of weeks ;)

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Sat Aug 15, 2015 2:56 am
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Post Re: CAD, CAM, CNC etc.
Hey Mike glad ya mill turned up without any probs . Did it incur any unexpected cost on its arrival in UK.
You may want to consider something like this if you have space i haven't unfortunately .

[flickr] ImageKX1DesktopEnclosure by D 1, on Flickr[/flickr]

Its not only a safety issue you will find a mill generates lots and lots of annoying ali chips they get ever ware . They fall onto floor stick to your shoes next thing ya know you got a house full of ali snow . Very tiresome if i had space i would def put a simple case round mine but cant fit one in the way its laid out at mo .
Look forward to your first cut or broken bit whichever comes first ;)
D1


Sun Aug 16, 2015 3:18 am
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Post Re: CAD, CAM, CNC etc.
Kitwn wrote:
Most of the parts for the cnc router have arrived (apart from the router :( ) in the post, my birthday lathe is here but needs a chuck for the tailstock before I can start doing useful stuff with it and I have a suitable computer ready and waiting for the interface card to arrive.

I've started work on building the Z axis, then will expand out to Y and X axes. This is partly a make-it-up-as-you-go-along project, though a nearly complete picture of the finished beast is in my head already. The HQ6600 stepper boards are still not designed but I have done some research on Minimum Quantity Lubrication (MQL) systems to extend tool life without spraying cutting fluid all over the workshop.

Finishing the soundtrack to Pipsqueak Studios' first masterpiece and preparing for doing some aluminium casting are also calling for some time to be spent on them. If only I didn't have to work for a living!

Kit

work is not the only thing that can get in the way. life still gets in the way :roll: three piglets arrived today. swapping 3 lambs for the piglets. then did some fencing rural fencing not the sport where you try to stab people with long pointy foils :roll:. then to top things off i delivered a calf honest i had grand intentions of working on the type 2 gopro specialized motorized slider but it was all for naught oh well there's always tomorrow :-) i actually miss running a cnc machine the sameness of each day lead to a predictable outcome each day nothing like a farm at all :shock:


Sun Aug 16, 2015 4:11 am
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Post Re: CAD, CAM, CNC etc.
How nice! I wish I lived somewhere they allowed cows, sheep and pigs. They did pass an ordinance allowing a few chickens but no roosters here. Can you believe it? Chickens but no rooster? How's that going to work? People are going to have to import new chickens all the time. Crazy.

When he sold me one of the milling machines after his shop went bankrupt, Fred warned me about the aluminum chips. They will kill your pets. Dogs and cats will eat aluminum chips which are like little razor blades. They cut the animal's gut up from the inside. Even if they don't go around eating chips per se, the chips stick in their fur and when your pet licks them off some get swallowed.

I have a special set of flip flop shoes that sit just inside the door to the garage. On my way out there, I switch shoes at the door. I switch shoes again when I go back in the house. This keeps most of the chips out in the garage. I also try to clean up from time to time so I get the entire floor clear of projects so i can vacuum up any chips that make their way in, and any small screws or other potentially harmful stuff.


Sun Aug 16, 2015 4:46 am
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Post Re: CAD, CAM, CNC etc.
Thanks for the info on enclosures and why I should use one, did a quick manual machining of a slot and a lot of fine chips were generated, much more troublesome than using my lathe.
I have no pets to worry about, although I would like to train some of the buzzards that regularly fly over to take the neighbourhood cats ;)

Hit a snag when I checked the machine to stepper couplings, imperial to metric problem, I know I have a mill but I need a broach to re-cut the key-way. I am hopeful I can "outsource" the machining, just waiting for a reply/quote. Otherwise will get the appropriate cutters and do it myself, even if the key-way has to have a deeper but rounded end.

D1, no unforeseen charges in fact I was pleasantly surprised with the overall cost of the import/delivery charges, better spent elsewhere but a necessary evil unfortunately.
Cost me more for a new mower today, 15 years of nursing and tin bashing the old one came to an end :(

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Mon Aug 17, 2015 10:26 am
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Post Re: CAD, CAM, CNC etc.
good advice sl my new pup tries to eat everything it can fit into its mouth and some things that don't :roll:
d1 that case looks hospital grade


Tue Aug 18, 2015 5:29 am
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Post Re: CAD, CAM, CNC etc.
chardie,
You wouldn't go back to working for a living now you've discovered the rural idyll :lol: May we know where the farm is, by the way?

James,
Good advice re the chips. I'm going to be more careful in future as we have a couple of small dogs. Chickens are allowed here in Exmouth, WA, but not roosters because of the noise. Not everyone complies, of course.

I've been busy making a cunning device, with an Arduino in in as usual, to allow our whole PC based home entertainment system to be simply operated by a single remote control. This became urgent when we decided to visit Canberra in September and leave my mother-in-law house-sitting. Last night we decided to enter the local portrait competition ('Exibald', our local version of the national Archibald prize) in October now that photography is permitted...
I really will get the CNC router built eventually.

Kit


Wed Aug 19, 2015 5:15 pm
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Post Re: CAD, CAM, CNC etc.
i dont want to hijack the thread however i am at stanthorpe actually 20 k's out of town and i need the job to pay the mortgage and keep my indulgences with cameras, computers and electronics continuing ;)


Thu Aug 20, 2015 1:43 am
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Post Re: CAD, CAM, CNC etc.
Overcame motor coupling problem,with no added expense, used my lathe in the end. Just fitting motors to mill, one down, two to go. Wiring
the motors via sockets and plugs to the controller. Ordered some 20mm square tube and fittings for an enclosure frame + 3mm thick aluminium sheet for base,
attaches to 2" thick worktop. Will use hardboard or ply for the sides and polycarbonate sheet for front and top if I can source
fairly cheaply.
On the gardening / farming front, just lifted a couple of bags of spinach and lettuce that had gone to seed to feed my nieces chickens and
cockerel, here it is up to the neighbours to prove annoyance, not that it usually is a problem, except for newbies that come to the countryside
looking for peace and quiet :lol: Exchanging for a coffee and walnut sponge cake as soon as there are enough eggs :-)

Good luck with the portrait entry Kit

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Thu Aug 20, 2015 10:15 am
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Post Re: CAD, CAM, CNC etc.
its nice to hear it's not all about computers cameras and hardware ;)


Fri Aug 21, 2015 12:49 am
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Post Re: CAD, CAM, CNC etc.
Software package to take ones thought off on another tangent ;)
http://www.gearotic.com/
Some interesting time consuming projects.
http://zeamon.com/wordpress/

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Fri Aug 21, 2015 9:59 pm
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Post Re: CAD, CAM, CNC etc.
Great links Mike. Thanks very much.

So... My plan for the next 20 years looks like finish the CNC router, use it and the nano-lathe to build a better mo-co rig for the camera, then buy Gearotic 2.0 to design and build a giant orrery machined from cast aluminium and brass parts which will be the set for an animated movie in which Morph walks about among the planets explaining how the solar system works! Obviously Chas will have to be on hand to throw the odd comet into the works.

I love it when all my various activities are working towards a common goal.

For those unfamiliar with Morph, he has a channel on YouTube.

Kit


Sat Aug 22, 2015 6:29 pm
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Post Re: CAD, CAM, CNC etc.
Kit, if you require a table to place your project onto this may be the very thing (+another 10yrs) LOL...........

https://www.youtube.com/watch?v=uVbo7ycpkeI

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Sat Aug 22, 2015 10:37 pm
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Post Re: CAD, CAM, CNC etc.
Taig mill latest:
Replaced hand wheels with stepper motors and carried out preliminary tuning and set up in Mach 3.

Carried out a "non-destructive cut of a timing pulley with the cut depth set to zero and thick picture framing backing card for stock.
The tool was a spring loaded pencil, it consisted a 10mm aluminium tube (ex- Yagi aerial element), the spring from a old Biro and a
pencil sanded to fit the tube.
The advantage of the above is I have a setup I can test my stock size / positioning / CanBan and g-code outputs for the X and Y axes
safely. The pencil will move 20mm in the vertical direction so I could test the Z as well.
Just finished fitted the aluminium base and re-bolting the mill to its new base, waiting for my young nephew to complete the framework he started
the other day so that the panels can be measured and material ordered / scavenged ;)
The frame is quite light and just rests on the base (cannot move other than vertically once seated) so that it can be lifted off the access the mill for major cleaning / maintenance.


Attachments:
MillBase01.jpg
MillBase01.jpg [ 48.85 KiB | Viewed 9084 times ]
MillCut01.jpg
MillCut01.jpg [ 49.43 KiB | Viewed 9084 times ]
MillCut02.jpg
MillCut02.jpg [ 49.11 KiB | Viewed 9084 times ]

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Tue Aug 25, 2015 11:15 am
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Post Re: CAD, CAM, CNC etc.
Hi Mike looks like ya got a nice set up their . Time spent calibrating is well worth it especially ware timing pulleys are concerned . Broke another bit the other day its always the rapids that catch me out . Should increase the retract height really but it increases machining time . Got another chunk taken out of me vice :(
D1


Wed Aug 26, 2015 12:41 am
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Post Re: CAD, CAM, CNC etc.
DISPLACEMENT 1 wrote:
Hi Mike looks like ya got a nice set up their . Time spent calibrating is well worth it especially ware timing pulleys are concerned . Broke another bit the other day its always the rapids that catch me out . Should increase the retract height really but it increases machining time . Got another chunk taken out of me vice :(
D1

D1, you instil confidence.... LOL

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Wed Aug 26, 2015 1:21 am
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Post Re: CAD, CAM, CNC etc.
Dont worry not done any serious damage yet ! As for vice will either buy a new one it wasn't a expensive one or i will machine new faces . Me mate as a more industrial workshop :D
[flickr]Image2014-05-21 12.37.13 by D 1, on Flickr[/flickr]
[flickr]Image2014-05-21 12.36.38 by D 1, on Flickr[/flickr]
While in off topic mode i have posted bits of aluminum been solderd etc well it ended up as this . Lots of CNC stuff in it too
[flickr]Image2015-03-21 14.14.43 by D 1, on Flickr[/flickr]
Fully animatable prop for Club Penguin: Monster Beach. Party Me day job although quite at mo so if anybody needs anything making :D
D1


Wed Aug 26, 2015 1:54 am
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Post Re: CAD, CAM, CNC etc.
now i'm really envious :)


Wed Aug 26, 2015 3:29 am
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Post Re: CAD, CAM, CNC etc.
chardie wrote:
now i'm really envious :)

If you envious of me mates workshop so i am i . Two huge lathes and a old Bridgport Milling machine that can chew its way through just about anything . But must admit they do scare me a bit quite easily have your arm off .
If its the day job don't be I spend a lot of time pottering between jobs these days hence my semi retired state :D . Cgi altered a lot of things . Had a go at building same thing in Blender

[flickr]ImageScreenshot (72) by D 1, on Flickr[/flickr]

I can do it but not as quick as kids out of collage and i wouldn't want to be sat in front on a monitor all day . Cg model handy for working out how to build somthing thought so try and do it for most stuff these days . Clients like it to , got keep them happy
D1


Wed Aug 26, 2015 4:32 am
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