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  #301  
Old Tue 10 February 2015, 09:48
servant74
Just call me: Jack
 
Nashville (Tennessee)
United States of America
Very nice. ... What size is it? (Diameter)
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  #302  
Old Tue 10 February 2015, 13:18
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Quote:
Originally Posted by lonestaral View Post
400 mm dia, 32mm thick Padauk.
About 16" diam, 1.25" thick
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  #303  
Old Tue 10 February 2015, 13:45
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
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Even at 60.....your still darn good
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  #304  
Old Tue 10 February 2015, 22:48
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Wish I had one for some fat cats in our Country.Would send them to a place where it is hot.
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  #305  
Old Wed 11 February 2015, 05:42
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Top clamp on all 4 corners.
Circular face the flat area for the symbols.
42mm dia cutter, bottom speed, F1200. A couple of minutes.

Engrave all lines, 10mm v, Mid speed, f1000. 16 Minutes, ran the path twice, saved on sanding time.

Carve the symbols, same as above. 10 minutes.

Rough dish the mid section, 12.7mm Ball nose, 5mm d.o.c., 6.35mm step over, F1200., 20 minutes.
Finish dish, 4mm ball nose, F3200., 50 minutes.

Outside profile, 12.7mm cutter, 5mm d.o.c., f1200, 6 minutes.

A couple of hours to sand, defuzz, seal, varnish and apply a bracket.

A piece of the wood broke away and jammed between the cutter and the outer profile.
There was a jolt. Result, a broken cutter and the Z axis out of alignment.
I made a trammel out of a cutter shank and a 2.6mm welding rod.
The Z is now better aligned than it ever was.
I plan to make a new router plate with gussets welded on.
Should get rid of some slight flexing.

Some of this tropical hardwood is hard and dense.

I could send you one Hennie, but there is no guarantee attached.
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  #306  
Old Thu 19 February 2015, 18:01
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
Very nice indeed.
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  #307  
Old Sun 08 March 2015, 06:59
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Rotating things

I made a simple 4th axis last year.
It was my intention to build a proper one and try a reduction drive.
I gathered the parts over the last year.
After a period of not wanting to do anything for 6 months, I made a start yesterday.
I have 3 nema 23 motors from my old machine.
I made a 6:1 reduction drive from plywood to prove it works.
It did, very impressed.
Started work on the 4th axis today.
The shaft, and other bits came from a scrapyard, motorbike parts, hence the gears.

I have a plan for the nema 23 motors and reduction drive.
It involves a lathe.
I will ask the questions on the 'Catchall' thread.
Attached Images
File Type: jpg SANY0005.jpg (54.1 KB, 685 views)
File Type: jpg SANY0006.jpg (65.3 KB, 684 views)
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  #308  
Old Mon 09 March 2015, 17:55
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Been wanting to do this myself, but sit on the couch til the feeling goes away.
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  #309  
Old Mon 09 March 2015, 20:03
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Sitting on the couch is more comfortable than sitting on the fence.
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  #310  
Old Tue 10 March 2015, 07:04
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
Hey, mine is sitting on the floor. Have not had the time to integrate it into the machine yet. So I have been on the floor for 2 years. They say all good things come with time. I am trying to convince myself of that.
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  #311  
Old Tue 10 March 2015, 07:20
silverdog
Just call me: Sergio #70
 
Rome
Italy
I am in the Club too :-)
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  #312  
Old Tue 10 March 2015, 15:18
Alan_c
Just call me: Alan (#11)
 
Grabouw (Western Cape)
South Africa
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Mine too have I really been that busy that I have not been able to get mine fitted or am I just a grade 1 procrastinator?
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  #313  
Old Tue 10 March 2015, 19:40
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Once you start 4 sided machining...or continuous 4th axis...it's like an addiction.
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  #314  
Old Tue 10 March 2015, 21:15
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Oh sure, Sean....now you tell us....
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  #315  
Old Wed 11 March 2015, 00:38
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Take Sean`s word for it.
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  #316  
Old Sun 15 March 2015, 21:53
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
. Lol.
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  #317  
Old Sun 22 March 2015, 00:52
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
The Bolt test

I tried out my 4th axis in earnest this morning.
It worked better than I had hoped.
It didn't bat an eyelid .
No missed steps. It worked.

Both the 4th axis and and myself passed the bolt test(as performed by Isla WW).

MechMate, every day a new adventure.
Now, about this lathe.
Attached Images
File Type: jpg Woody.002.4.jpg (41.6 KB, 536 views)
File Type: jpg Woody.003.4.jpg (37.3 KB, 536 views)
File Type: jpg Woody.004.4.jpg (53.1 KB, 536 views)
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  #318  
Old Sun 22 March 2015, 04:29
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Nice test!
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  #319  
Old Sun 22 March 2015, 04:41
racedirector
Just call me: Bruce #122
 
New South Wales
Australia
Congrats Al, looks awesome!
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  #320  
Old Sun 22 March 2015, 06:20
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
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Very happy for you.....
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  #321  
Old Sun 22 March 2015, 07:15
silverdog
Just call me: Sergio #70
 
Rome
Italy
Congratulations !
I wonder if I could 3D print the big pulley ... I cannot figure how much force there is on the rotary axis, the PLA of the 3D priner is very strong but it's not metal ... is driven by a nema 23 motor ?
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  #322  
Old Sun 22 March 2015, 07:59
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Silverdog.
Yes it is a nema 23 motor.
Geared 6:1
I took 3mm depth of cut with a 42mm dia cutter,20mm step over in Padauk(hardwood) while roughing out.
No problem.
The big pulley cost 18 Pounds Sterling last March.
Might get another to gear the Z axis.
The dp of the big pulley is 114.59mm, 72 teeth.
Hope this helps you.

Last edited by lonestaral; Sun 22 March 2015 at 08:02.. Reason: Price included
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  #323  
Old Sun 22 March 2015, 08:19
silverdog
Just call me: Sergio #70
 
Rome
Italy
Thanks Al :-)
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  #324  
Old Mon 23 March 2015, 10:47
servant74
Just call me: Jack
 
Nashville (Tennessee)
United States of America
Very Nice!
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  #325  
Old Mon 23 March 2015, 18:42
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
I would recommend an idler. If it is 6:1 then I assume then you have a 12 tooth driving pulley. This would leave only 4 teeth engaged in the drive pulley unless your center to center distance is really large. Only a suggestion. Nicely executed.
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  #326  
Old Mon 23 March 2015, 19:44
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
nicely done....
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  #327  
Old Tue 24 March 2015, 06:46
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Thank you for the positive comments gentlemen.

#98, sage advise as always.
Yes, I did think about the small contact area.
If I had a lot of serious work for a 4th axis, I would build another with a longer belt and an idler.(Anyone got a STL file of a bust of William Shakespeare]

But for now my new toy will do.
All part of the MechMate adventure.
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  #328  
Old Tue 24 March 2015, 15:06
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
If you find that stl, I am interested as well.
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  #329  
Old Tue 24 March 2015, 20:21
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
There are some on http://www.123dapp.com/
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  #330  
Old Sun 10 May 2015, 06:42
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
I got back from a visit to England a few days ago.
I got some timing pulleys and belts.(Corian, drill bits , files, screws, tea bags, razor blades) 15kg more than what I went with.
I will make a reduction drive for my Z axis.

Today I moved the electrical box from under the machine
and mounted it on the wall.
I can still get down but getting back up is becoming more of a problem
as time passes.
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