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 CAD, CAM, CNC etc. 
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Joined: Wed Feb 15, 2012 3:36 pm
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Post Re: CAD, CAM, CNC etc.
Thank you, Mike, for the very detailed description, always interested in how people make their parts.

Edward


Wed Apr 27, 2016 5:41 am
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Post Re: CAD, CAM, CNC etc.
D1, my first attempt at using CamBam profile + my combination "ClampVice" that holds 6, 10, and 15mm thick stock up to 400mm long.

Clamp is stepped to give a 0.5mm of interference fit with the stock, so should hold quite firmly even though the step width is small.


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Wed Apr 27, 2016 5:44 am
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Post Re: CAD, CAM, CNC etc.
Hi Mike like your clamping blocks not seen those before thats why i like this forum :D . I do find with my vice and parrels their is a tendency for the work piece to lift slightly when you tighten up . And if you get i nice grip you them have to worry about going through work piece and hits my nice precision parrels.
Will make some blocks when i have time and give it a go.
I side profile a lot and yes a much finer cut gives great results if ya have the time .
Hi Edward take it you haven't CNC fushioned your mill yet ?
D1


Wed Apr 27, 2016 6:59 am
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Post Re: CAD, CAM, CNC etc.
Hi, D1, same problem with lifting, so got the pencil and graph paper out and.............

I machined both jaws as one, ie two 30mm blocks side by side in a vice. The base "keys" 2mm depth first. Two holes for T-bolts next and spotted the other holes for drilling later.
Secured both blocks to machine bed and milled the slots, that way everything is square to the machine table and to each other.

* That bearing of yours looks impressive, would not like to lug it outdoors though ;)

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Wed Apr 27, 2016 7:24 am
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Post Re: CAD, CAM, CNC etc.
DISPLACEMENT 1 wrote:
Hi Edward take it you haven't CNC fushioned your mill yet ?
D1



Hi D1, funny that you would ask. I am having my garage converted into a room, a proper brick extension, which will be a bit larger than a normal garage, and this will be my workshop, nice and warm in the winter. Then I will get a proper CNC mill to spend my hours in sheer luxury:)


BTW, my robotised stand is working well, it just needs a lightweight pan/tilt now. But I use this rig daily with my Leaf digital back on a bellows view camera, and just to plug Gerald's Mantis, he has written a wonderful three axes Mantis version (column, dolly track and camera tilt) which keeps a perfect (and I mean perfect) arc with the camera travelling 90 degrees from horizontal to vertical, all the time keeping track on the subject, maintaining the same camera to subject distance. Gerald churned out this addition in no time. It works with any radius to the arc that you want to choose, (fixed or variable) and you can have it working on a normal Mantis timeline together with other axers.

Unlike your mega heavy track, (I saw the pics) my track is only 2m. as I don't need more, usual Bosh Rexroth stuff with 20mm Hiwin blocks/tracks. Runs nicely, no vibration on the track whatsoever.

Edward


Wed Apr 27, 2016 11:37 am
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Location: Merritt Island, Florida, Estates Unitas
Post Re: CAD, CAM, CNC etc.
Great timing with the post about the large vise Mike! I have to mill a big plate for the deck of a high speed dolly. I think I'll look around for something to make one of those out of. When finished, it can hold the plate instead of just clamping it to the mill table. By next week it would have been too late.


Wed Apr 27, 2016 12:07 pm
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Post Re: CAD, CAM, CNC etc.
sciencelookers wrote:
Great timing with the post about the large vise Mike! I have to mill a big plate for the deck of a high speed dolly. I think I'll look around for something to make one of those out of. When finished, it can hold the plate instead of just clamping it to the mill table. By next week it would have been too late.

You can thank the weather for the timing James. Plenty to do in the garden but waiting for ground to warm up ;) If it stays cold I am looking to modify the design with side clamps so that all the top of the stock can be milled, the current clamps mask the ends of the stock. Something for you to consider if you create a similar fixture.

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Wed Apr 27, 2016 11:41 pm
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Post Re: CAD, CAM, CNC etc.
edward wrote:
DISPLACEMENT 1 wrote:
Hi Edward take it you haven't CNC fushioned your mill yet ?
D1



Hi D1, funny that you would ask. I am having my garage converted into a room, a proper brick extension, which will be a bit larger than a normal garage, and this will be my workshop, nice and warm in the winter. Then I will get a proper CNC mill to spend my hours in sheer luxury:)

Edward


My little Chinese mill might take offense at the word proper but i know what ya mean . What" Proper CNC " :D are you looking at.
You wont regret spending money on your man shed its nice to be comfy when ya pottering .
D1


Thu Apr 28, 2016 12:19 am
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Post Re: CAD, CAM, CNC etc.
DISPLACEMENT 1 wrote:
Hi Mike like your clamping blocks not seen those before thats why i like this forum :D . I do find with my vice and parrels their is a tendency for the work piece to lift slightly when you tighten up . And if you get i nice grip you them have to worry about going through work piece and hits my nice precision parrels.
Will make some blocks when i have time and give it a go.
I side profile a lot and yes a much finer cut gives great results if ya have the time .
Hi Edward take it you haven't CNC fushioned your mill yet ?
D1

I reduced the lift with my home brew vice by adding a T-bolt to the moving jaw,it clamps the jaw to the vice base. I can clamp down with it whilst tightening the jaw.
A downward moving jaw must be one answer ;)

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Thu Apr 28, 2016 2:19 am
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Post Re: CAD, CAM, CNC etc.
Hi Mike the vice is not that bad think it just needs a good clean and tidy up . Cutwell do keep sending me broaches for very exotic holding gear which look great but can cost more than my mill .
My next mill project is to make a proper case with some sort of tray for collecting all the swarth . Fed up of trying to sweep it up every time i mill something and hoping to recycle it into big lumps with my forge thing . When i have made it :(
D1


Thu Apr 28, 2016 6:16 am
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Location: Exmouth, Western Australia
Post Re: CAD, CAM, CNC etc.
Well it's almost embarrassing to see all the high-tech stuff you chaps are up to and then show off my lowly offering but I'm going to anyway.

I spent quite a lot of time playing with Fusion 360 trying to get a design for a second generation CNC router sorted. Loads of ideas and even more frustration at the software. I really haven't got the hang of this 3D stuff yet and found objects moving about when I didn't want them or refusing to submit to my will in an assortment of other ways. The first machine wasn't good enough to make the parts for the Mk 0.2 machine anyway.

After doing other stuff instead and then reverting to paper and pencil I have finally built a working beast. This should be good enough to make parts for further upgrades and is currently being tested making a wooden clock. I decided on this after accidentally finding a wonderful piece of software called Gearotic II.

Kit



Wed May 04, 2016 5:06 am
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Post Re: CAD, CAM, CNC etc.
Looks like a good clean cut on the gears you are producing Kit, what size is the cutting table?

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Wed May 04, 2016 9:41 am
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Post Re: CAD, CAM, CNC etc.
Hi Kit looking good but i fear you have been distracted by a new hobby " Master Clock Maker "
Like the size of the bed find my mill far to restrictive so going to start collecting bits for mill two :D
I would still recommend Design Spark for Cad . I can do it in my sleep now hardly any learning curve. But if ya happy with pen and paper fine just doesn't load into Cam software very well .
What ya using for runners ? I dont think its Openbuilds is it .
Still haven't got round to my forge but really need to do something soon i have a small mountain of ali scrap after all the milling i have been doing recently .
D1


Wed May 04, 2016 11:31 am
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Location: Exmouth, Western Australia
Post Re: CAD, CAM, CNC etc.
Thanks for the comments gents.
The rail is MakerSlide. If I was starting again I'd probably use V-Slot and C-Beam instead as it comes in a variety of sizes to suit the load you want to carry. The wheels are the same.
The current cutting area is only about 300x340mm which is already imposing limits on what I can do. I've just got the rail to upgrade the Y axis rails from 500m to 1m which will give me 800x340mm. This will still fit nicely on the table the machine occupies and I don't envisage any projects requiring 800 square just yet.

D1,
You're right about the clocks! The current clock was intended as much as anything as a test project for the CNC machine but after a browse of the following websites I'm going to build a swanky one to enter for the annual Craft Show and possibly do a few other experiments as well...
http://www.woodentimes.com/
http://www.woodthatworks.com/

I can't remember where I first saw Gearotic but it's a fascinating bit of software. Something of a self-funding hobby for it's creator (who also wrote Mach 3 so he's quite smart), it was original intended purely for gear design but has grown to include gears, timing pulleys of all shapes and sizes (CamBam has lost it's Brownie points in that respect now), non-circular gears and escapements for clocks. The latest version now includes a CAM module so the one package can help you design the parts you want and generate the G-Code to cut them out. He's currently working on a module that can use photographs to scan an object and cut it out in relief. It's a pay-once-get-updates-for-ever license so who knows what features it will include in time?
http://www.gear2motion.com/

Something that may be of interest to some people is his latest program, 'Augie' which is described as "an 8 axis motion controller using the PoKeys Hardware devices by PoLabs. It uses C-like scripting and is being developed to be a powerfull scripted motion controller for machines of any motorized type."
Details at http://www.gear2motion.com/auggie

Kit


Wed May 04, 2016 4:55 pm
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Post Re: CAD, CAM, CNC etc.
Handy programme Kit, table movement on my mill not large enough for clock gears, maybe need to make one ;)

Hi, Di, glad the reply on the other post made sense, slew bearing in need of a project to use it on.
Gardening very busy, plants in greenhouse bake in the day so put outside and then cold at night so all back in again but those are the delights of gardening along with pruning, grass cutting........:D
Just ordered material for Crane / slider. project. Used Ali warehouse and https://www.forwardmetals.co.uk/ for some bar that the other did not stock. Ordered both online over the w/e FM arrived Tues - free post with timed delivery and good material.

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Wed May 11, 2016 2:48 am
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Post Re: CAD, CAM, CNC etc.
Mike,

I order from both, as both are good. For larger pieces Alu Warehouse are great. They usually take around 3 days to deliver. I mainly use them for their flat plate, machined flat on both sides.

For bolts, I tend to use Boltbase on ebay, they dispatch same day, they've never failed me.

http://ooznest.co.uk are very quick too for Openbuilds stuff.

For pulleys and belts, you can't beat Beltingonline.

Simplybearings….for, guess what!

For extrusions compatible with Bosch Rexroth, http://www.aluminium-profile.co.uk/ are very good and cheaper.

I have to say, most British suppliers are extremely good at quick and efficient dispatching of goods, much, much faster than many of the most advanced European countries which have a lot of bureaucracy, they can take days or even weeks to just process an order. I won't mention names.

I find that dealing with the US is also generally good.

Maybe we should have a thread where everybody shares their favourite suppliers?

Edward


Wed May 11, 2016 11:50 am
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Post Re: CAD, CAM, CNC etc.
Hi Mike i think i have a more leisurely approach to gardening than you. I just like to watch stuff grow preferably from my deck chair :D .
Think i have reached limitations of my mill going to build a heavy duty CNC router specially for ali plate . Think if i use heavy duty box steel and weld it it should have a lot more rigidity than a lot of the ali extrusion versions out their . It wont be pretty or light but i think it will do the job a lot better and quicker than my current set up . Friend getting a new workshop so might not even have to go in the shed. Spindle motors are great for extra speed but it can be noisy. So if i can get it out of the shed that would be good As for bed it will just be a big piece of ali plate . Once the routers built you just skim the surface and drill holes . When we last had a 8x4 router fitted they skimmed the bed to it took all day but you do get a perfectly level work area .
We all seem to be using the same suppliers as it is . Only one i can add and i have mentioned it before are https://www.orbitalfasteners.co.uk/ for nuts and bolts .
These are quite good for knobs latches feet etc http://www.wdsltd.co.uk/ quick service to .
D1


Wed May 11, 2016 12:40 pm
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Post Re: CAD, CAM, CNC etc.
Me again got a horrible feeling i am the most active person on this forum for which i do apologies .
Just got a order from http://www.wdsltd.co.uk/ and managed to get a catalog this time :D Theirs so much stuff that isn't obvious on their web site or you dont know the name of . Picture are great this will be my bed time reading for next few days .
This company may be of interest to you Edward http://www.hepcomotion.com/ a very high quality version of Vslot i suppose . They have some great stuff but i dont think its cheap :(
D1


Thu May 12, 2016 3:01 am
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Post Re: CAD, CAM, CNC etc.
Hi D1, yes I know Hepco. I asked for prices a long while ago. They are very expensive. Besides I am not sure steel rollers are subtle enough for what we do. I prefer plastic rollers (PU), they are quieter and they grind less.

Edward


Thu May 12, 2016 11:34 am
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Post Re: CAD, CAM, CNC etc.
DISPLACEMENT 1 wrote:
Hi Mike i think i have a more leisurely approach to gardening than you. I just like to watch stuff grow preferably from my deck chair :D .
Think i have reached limitations of my mill going to build a heavy duty CNC router specially for ali plate . Think if i use heavy duty box steel and weld it it should have a lot more rigidity than a lot of the ali extrusion versions out their . It wont be pretty or light but i think it will do the job a lot better and quicker than my current set up . Friend getting a new workshop so might not even have to go in the shed. Spindle motors are great for extra speed but it can be noisy. So if i can get it out of the shed that would be good As for bed it will just be a big piece of ali plate . Once the routers built you just skim the surface and drill holes . When we last had a 8x4 router fitted they skimmed the bed to it took all day but you do get a perfectly level work area .
We all seem to be using the same suppliers as it is . Only one i can add and i have mentioned it before are https://www.orbitalfasteners.co.uk/ for nuts and bolts .
These are quite good for knobs latches feet etc http://www.wdsltd.co.uk/ quick service to .
D1

All I would end up is 1/2 acre of weeds and hungry for the next 12 months ;)

Sounds like a mean machine you are looking to build, thanks for link, useful and don't forget http://www.zappautomation.co.uk/

Just taken delivery parts for my next project, not sure what it will be but 2off 2metres x 100 x 100mm and 1off 2metres x 180 x 180mm carbon tubes, with smooooth 8 wheel carriages and internal wheeled counter balance weights, cameras.......... :lol:

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Fri May 13, 2016 10:47 am
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Location: Merritt Island, Florida, Estates Unitas
Post Re: CAD, CAM, CNC etc.
I got my large plate milled using a clamping device similar to the one Mike showed us. While doing that, a machinist friend told me about this handy split-vise designed for doing oversize things. I spent all my money on aluminum and bearings for now, but next payday I plan on getting one of these. Here's a link to it.

http://www.mscdirect.com/product/details/84397389


Sat May 14, 2016 4:59 am
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Post Re: CAD, CAM, CNC etc.
sciencelookers wrote:
I got my large plate milled using a clamping device similar to the one Mike showed us. While doing that, a machinist friend told me about this handy split-vise designed for doing oversize things. I spent all my money on aluminum and bearings for now, but next payday I plan on getting one of these. Here's a link to it.

http://www.mscdirect.com/product/details/84397389


Hi, Why not save some money and use an angle grinder to split a cheap standard vice in half ?

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Sat May 14, 2016 5:55 am
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