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  #271  
Old Sun 14 December 2014, 13:43
racedirector
Just call me: Bruce #122
 
New South Wales
Australia
I echo Gerald's comments, same down here in Aus.

Well done Al, that chain looks fine and will do the job well. Love your 3D stuff, makes me want to try something. Keep 'em coming!
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  #272  
Old Sun 14 December 2014, 18:22
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
I know that here in the states we have more stuff easily available but it is not always less expensive. I like to see the stuff the others make and can buy. A chinese spindle we can get for roughly 350US but the brand name bearings rated for them are 900US+ for one set (sealed and paired). Why, because they are made in places like Italy and made to order so we have to pay that shipping cost. I have read a lot of stuff where builders state what it cost them and I can't build it for 3 to 4 times their cost. So it is relative to location and place and manufacturer.
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  #273  
Old Mon 15 December 2014, 02:59
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
No offence taken.
I make things for different reasons.

1. I cannot afford it.

2. I cannot get it.

3. Because I can.

I do not live in the western world.
The main activity around here is rice farming.
There are many things here I cannot get
I might have a chance if I was in Bangkok.
The best I can do is go to the local nut and bolt shop with a Google image and see if they have it. Sometimes they have no idea what it is.

There is the language barrier. The chances of me getting someone on the phone at an engineering supplier who can speak English and who understands what I want are slim indeed.
I cannot ask the wife to phone because she is not an engineer.
There have been arguments in the past. Lesson learned, leave her alone.
They tend to use centimeters here, so when I say millimeters it tends to confuse them.

I could import but most deliveries go to the customs in Bkk.
Additional transport charges apply as well as imaginative import duties.

On my trips back to England I pick up bearings, pinions, timing belts and the like. I even brought the racking back with me.

When I started my build I was lucky to fins a company with an old nc gas profile cutter.
The sizes produced were +/- 3mm.
The bends well !!!!!!
The y car had to be guillotined into 3 parts, bent then welded back together.
The spider was a disaster. I had to do it a different way.

Full credit to Gerald for a flexible and adaptable design.

Anyway I enjoy it.
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  #274  
Old Mon 15 December 2014, 03:53
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
Well stated sir.
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  #275  
Old Mon 15 December 2014, 04:39
racedirector
Just call me: Bruce #122
 
New South Wales
Australia
I'd be clicking Like on that post Al.... if we had one.
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  #276  
Old Mon 15 December 2014, 06:31
Fox
Just call me: Fox
 
Amsterdam
Netherlands
Super nice of you to answer so in depth Al.
If I had not asked you, and you had not answered, others would not have learned.
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  #277  
Old Mon 15 December 2014, 15:21
silverdog
Just call me: Sergio #70
 
Rome
Italy
this could be helpfull ... I tried and it's not bad ...
http://www.cnczone.com/forums/videos/172959-cnc.html
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  #278  
Old Mon 15 December 2014, 15:22
silverdog
Just call me: Sergio #70
 
Rome
Italy
Any news about the 4th axis ? I am still working on it
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  #279  
Old Mon 15 December 2014, 15:26
Duds
Just call me: Dale
 
Canberra
Australia
Sergio there's something wrong with that link it takes me to CNCZone and then bounces me to an ad for porn.
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  #280  
Old Mon 15 December 2014, 15:57
silverdog
Just call me: Sergio #70
 
Rome
Italy
that's strange, I tried and work fine .... with no porn ads ... sorry
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  #281  
Old Mon 15 December 2014, 15:57
silverdog
Just call me: Sergio #70
 
Rome
Italy
try this ...
https://www.youtube.com/watch?v=JAWcicckaMA
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  #282  
Old Mon 15 December 2014, 23:08
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
The first link, in the first post, above the video, may be the dodgy one - it is inserted by VigLink, who gave me an Amazon ad for shoes. But. the video itself is good, and VERY interesting!
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  #283  
Old Wed 17 December 2014, 09:16
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
I did not have any trouble with the CNCZone link. The dxf files are further down the page also.
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  #284  
Old Thu 18 December 2014, 04:16
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Thank you for the link Sergio, it worked fine.
I had seen it before.
I did make a trial section.
The plywood I used was of poor quality despite ordering grade A.
The part that slipped over the links was prone to failure.

The chain that I have made has worked OK up to now, but I have not cut full width yet.

Speaking of full width, I took the opportunity to move the X axis homing switch and hard stop 50mm.
I now have 1250mm travel on the X axis.
There is scope for another 30mm on the other end of the axis.
Another job for the 'One of these days' list.
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  #285  
Old Sat 20 December 2014, 23:06
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Seasonal greetings to you all.

Attached picture of a copse of trees which I made yesterday.

If any of you want a copy of the DXF file, please send me a P.M. and I will mail it.
Attached Images
File Type: jpg 001.jpg (53.4 KB, 744 views)
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  #286  
Old Sat 20 December 2014, 23:28
racedirector
Just call me: Bruce #122
 
New South Wales
Australia
They look really cool Al, alot better than a lot of cnc'd trees I've seen. Well done!
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  #287  
Old Sat 20 December 2014, 23:40
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
Apparently it (the forum) did not like my first reply as it never posted it....


Pretty Awesome
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  #288  
Old Sat 20 December 2014, 23:57
racedirector
Just call me: Bruce #122
 
New South Wales
Australia
Gremlins Pete, Gremlins
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  #289  
Old Sun 21 December 2014, 00:40
Alan_c
Just call me: Alan (#11)
 
Cape Town (Western Cape)
South Africa
Send a message via Skype™ to Alan_c
Looks great, and a Merry Christmas to you too.
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  #290  
Old Sun 04 January 2015, 02:03
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Skeletal remains

Some interesting skeletal remains turned up during profile cutting.

A MechMate kingfisher and brace of MechMate sandpipers.
I only had to extend the bill on the large one.
The remaining shapes are as cut.
Attached Images
File Type: jpg 006.000.jpg (20.7 KB, 673 views)
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  #291  
Old Mon 19 January 2015, 04:18
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Some new things

A couple of new carvings.
I am trying to get some carved door panel or drawer front work.
I did the drawings in my spare time last week.
Did the programs and cutting over the weekend.
So I have some samples to show.
Fingers crossed.
Attached Images
File Type: jpg 011.jpg (41.4 KB, 581 views)
File Type: jpg 012.jpg (44.9 KB, 580 views)
File Type: jpg 013.jpg (45.1 KB, 580 views)
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  #292  
Old Mon 19 January 2015, 04:26
Tom Ayres
Just call me: Tom #117
 
Bassett (VA)
United States of America
Excellent work!
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  #293  
Old Mon 19 January 2015, 05:42
Duds
Just call me: Dale
 
Canberra
Australia
Beautiful work
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  #294  
Old Mon 19 January 2015, 15:01
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
Send a message via Yahoo to Robert M Send a message via Skype™ to Robert M
Yup....very nice
May you share some cutting strategy too
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  #295  
Old Tue 20 January 2015, 04:21
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Cutting strategy ? O.K. seeing that you asked.

I face and thickness the blank with a 42mm dia 3 tooth cutter.
I screw 2 lengths of 8mm threaded rod into the bed ensuring they do not protrude more than the finished thickness.
The work is edged clamped with a plywood cam clamp.
Set the jog to 25% and manually face the work.
Max depth of cut 2mm.

For the 2 1/2 D carving, rough out with a 8mm ball nose, 6mm deep, 5mm step over, bottom speed on the router, feed 1200mm/min.
Finishing 4mm ball nose, 1mm deep, mid speed, 3200 mm/min.

Panel carving, 10mm 90 degree V bit, 3mm D.O.C. 500mm plunge, 2mm step over, 1200 feed, up the speed on the router if I remember.
Clamped on top on 4 corners.

Not fast but it works for me.
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  #296  
Old Tue 20 January 2015, 05:29
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
Send a message via Yahoo to Robert M Send a message via Skype™ to Robert M
Interesting !!
Maybe .....maybe slow....but in defense, the results speaks
Have you tried a little faster ?

For your ballnose finishing, what was your stopover and what was your "hand" finishing/sanding (if any) had to be done before applying the protective coat of finish ?

Thanks for sharing
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  #297  
Old Wed 21 January 2015, 04:44
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
First the easy question.
Stepover 0.5mm.
Sanding time depends on various factors.
The quality and density of the wood, difference between heart wood and sapwood.
Sharpness of the tool.
Quality of grinding and accuracy of the radius produced by the grinder.
I have had some ball nose returned looking more like a V bit.
Also with V bits, how accurate the angle is.

I do not know what the wood is called for the panel carvings but it was dense and hard, very little sanding required.
The shellac raised the grain more than the cutter.
Time to sand, 20 min + depending on size and detail, also what I feel is acceptable. Could spend an hour or more sanding, but the weather is nice and the birds are singing.

Speed, the hard one.

My machine is probably one of the smaller and cheapest builds.
I posted before about money and availability.
The box section is thinner than I would have liked.
I have no axis drivers. The motors are driven direct from the board.
It is direct drive. Some day I will gear the axis, Z first.
No gas spring, only a coil spring.
The Z axis has relatively short travel so I have gagged the rapid to 2500mm/ min.
X and Y 6000mm/ min.

Many factors.
I hope this answers some of your questions.
Any more, please ask.
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  #298  
Old Thu 22 January 2015, 02:14
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
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Thanks for taking time to reply....
Enjoy.
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  #299  
Old Tue 10 February 2015, 05:54
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
A Stargate is born

I made this for my friend who repairs my computers.
He is a Sci Fi buff.
It gave me a lot of pleasure to create and cut it.
I learned a few things along the way.
The hard job is still to do, mount the hanging bracket.

I hope to present it to him this weekend.

400 mm dia, 32mm thick Padauk.
Unknown wood for the outer profiles
Attached Images
File Type: jpg 006.000.jpg (86.8 KB, 434 views)
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  #300  
Old Tue 10 February 2015, 06:51
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
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Very nice & impressive detailing !?
Care to share some data
IE : Tools, cut strategy and....total time !?
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