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  #1  
Old Tue 18 June 2013, 03:08
lonestaral
Just call me: Al #114
 
Isarn
Thailand
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Looking through new windows #114 - Isarn, Thailand

Hello all,
A quick introduction.
Mid 50,s, not working at the moment.
Spent 25 years programing and running other peoples machines.

I built a Jgro last year, too slow and not rigid enough.
So I have the motors and control.
I bought the rack and pinion parts a few months back.

I intend to start construction of a Mech mate when I get the funds.
I will build a 1200 x 600 bed machine.
I would like a 1200 x 1200 but not enough space.

A lot to learn and a lot to do.
Keep you posted.
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  #2  
Old Tue 18 June 2013, 17:23
IMMark
Just call me: Mark #119
 
Columbus Ohio
United States of America
Welcome Al...best of luck on your build (and employment).
Mark
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  #3  
Old Tue 18 June 2013, 22:56
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Thank's for the welcome.

Ok, some questions on materials.
I cannot get some of the sizes.
I can get 50 x 50 mm for the rails but I would have to move the holes out or reduce the center distance from rail to rail.

The 6" channel iron is available but expensive and at 6 Meters long I would use about half.

Could I piggy back 3" together by bolting or welding.
I know it is more work but I have the time.
I can borrow a stick welder, just got to learn how to weld.
Thanks for your time
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  #4  
Old Wed 19 June 2013, 01:05
KenC
Just call me: Ken
 
Klang
Malaysia
Welcome Al, As your intended for 1200 x 600, u don't need big C channel.I would recommend building up with 2" x 3" RHS. or simply use 2" x 4" C channels. & your 50 x 50 rail will fit in snuggly.
Honestly, 600 seems a bit too small, The gantry is 800mm wide already, doesn't look right... top heavy...
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  #5  
Old Wed 19 June 2013, 08:00
rischoof
Just call me: Rik #92
 
Goirle
Netherlands
al,
Welcome to the forum
I build a machine 1250x700 my x is 700 and my y is 1250.
If I get more space available in future I will enlarge my x to 2500 and my y and z are ready.
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  #6  
Old Fri 21 June 2013, 01:04
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Thanks guy's.

Build it the other way round, then use the Y & Z parts for a bigger machine in the future, space , time and budget permitting. !!!!!!!!!!!!!
Now that is one clever idea.

Why didn't I think of that.

Might do it that way.
My dad always said to get bigger than what you want as you will need it sometime.
Time to revise the materials list.
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  #7  
Old Wed 03 July 2013, 06:53
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
A few questions before I commit to a build.

I have 1.8Nm (256 oz/inch) stepper motors.
Will they be good enough ?

What rapid and feed rates should I expect from these motors if suitable (how long is a piece of string) ?

Hours for a build ?. Not a welder (on the job training !)

Lubricaion ? (A squirt from an oil can now and again)
Grease and wood dust, yummy !

All ideas welcome.
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  #8  
Old Wed 03 July 2013, 07:28
KenC
Just call me: Ken
 
Klang
Malaysia
"Hours of built" This is my favorite,
for those who never started, eternity,
for those who never want to finish, 9 incarnations,
for Perfectionist, as long as it takes...
for those who want a machine in a hurry, as soon as time/money runs out.

All the above applies to welder & non-welders...

Don't worry, if the 1.8Nm motor can turn the machine, keep them; otherwise, get some bigger one for replacement.

When you get yours running, you will find out the rapid feed speed by that time & decide if the speed is any good.

Grease? After a while, I got lazy & forget about there is such thing call lubrication....
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  #9  
Old Wed 03 July 2013, 07:38
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Ken,
A philosopher speaks.

I quite agree. (Suck it and see)

A day or two more reading and looking at drawings.
See what I can beg, steal & Borrow, the rest I buy.

Then into the deep end.
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  #10  
Old Sun 07 July 2013, 07:17
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Welcome, Al.
Jump on in to the deep end.
When I started, there was so much I didn't know, looking back I probably shouldn't have.
I think this forum and its support have evolved to the point that anyone with a little common sense and some decent forum etiquette can be successful in creating a production machine.
Every day the posters here show me how little I really know, and for that I'm grateful.
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  #11  
Old Thu 08 August 2013, 04:20
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
It looks like I will be buying steel tomorrow.
The X axis nut on my machine has worn out.
I could get a new one made but I would replace the Y & Z as well.
Expense and time versus a new machine.
I vote for a new machine.
Do I start a new thread in the "Construction started" when the steel arrives ?
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  #12  
Old Thu 08 August 2013, 06:47
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Just keep posting here, and one of the Mods will move it when they see actual construction has started.

Best of Luck!!
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  #13  
Old Fri 09 August 2013, 04:05
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Steel's up !
Deck cleared for action.

The wife has that look on her face, some of you will know it.
It translates "I hope he knows what he is doing".
It is the same in any language.

Hostilities will commence after daybreak tomorrow.
Attached Images
File Type: jpg Mechmate.001.jpg (36.1 KB, 1741 views)
File Type: jpg Mechmate.003.jpg (37.6 KB, 1735 views)
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  #14  
Old Fri 09 August 2013, 04:19
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Sorry, I forgot to ask.

Can I change the title of this thread from "Steel coming in soon" to "Hawkwind"

Is there a preferred build method ?
I read somewhere to start from the top down.
I will build some of the base first because I do not have a proper workbench.
I can use the partly built base as a bench.
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  #15  
Old Fri 09 August 2013, 11:19
parrulho
Just call me: Paulo #108
 
willemstad
Netherlands Antilles
good luck with your start. i did my table upside down and only, really, need help to turn it over.

regards,
Paulo
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  #16  
Old Sat 10 August 2013, 00:50
KenC
Just call me: Ken
 
Klang
Malaysia
I did mine upside down too, easier on the back. but you will definitely need help to turn it over.
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  #17  
Old Sat 10 August 2013, 04:10
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Made a start today cutting steel.
Result.
15 pieces cut.
15 pieces deburred
1 cut too long, but better than short (Misread cutting list)
1 burn (No footwear)
1 bruised big toe(Ditto)
2 Splinters (No gloves)
1 Backache.
1 Worn out chop saw disc.
1 Worn out sanding disc
1 worn out operator
Attached Images
File Type: jpg Mechmate.008.jpg (67.6 KB, 1727 views)
File Type: jpg Mechmate.009.jpg (75.7 KB, 1735 views)
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  #18  
Old Sat 10 August 2013, 06:09
KenC
Just call me: Ken
 
Klang
Malaysia
Now the fun begins!
Are those all the steel you ordered?

Last edited by KenC; Sat 10 August 2013 at 06:13..
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  #19  
Old Sat 10 August 2013, 06:47
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
Hawkwind, a start

Quote:
Originally Posted by KenC View Post
Now the fun begins!
Are those all the steel you ordered?
No, there is more to cut tomorrow, or the day after,
or the day after that.
I am not as young as I was or as young as the wife would like.

A jogger build I think, no sprint for me.
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  #20  
Old Sat 10 August 2013, 23:03
KenC
Just call me: Ken
 
Klang
Malaysia
What size channel are you using for the main beam?
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  #21  
Old Sun 11 August 2013, 06:39
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
76 X 38 X 6mm
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  #22  
Old Sun 11 August 2013, 20:19
KenC
Just call me: Ken
 
Klang
Malaysia
I hope you will stack up the channels or other concoction to increase the beam height. or you will end up having only 40~50mm clearance between the gantry beam to the table top.
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  #23  
Old Tue 13 August 2013, 06:52
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
First rails cut

I cut 2 rails to height today.
Luckily I read this thread first.
I found it a big help.

http://www.mechmate.com/forums/showthread.php?t=2087

Yes, work outside.
Ensure all sparks go away from the house and move vehicles.
Gloves.
Ear and eye protection.
Take your time.

The base for the jig is 20mm mdf.
Top plate steel.

Mounted the rails and jig on the bed from my old machine.
Above mounted on an old washing up stand.
Clamp and cut, reposition and cut.

I found I could get a better cut if I left the top plate in contact
with the rail(photo 14)
I left the top plate slightly proud of the grinder casing.
The discs wore away and the grinder gearbox did not contact the rail

Old Machtec 4" grinder.
Cheap 1mm cutting discs.
Used 2 1/2 discs on the 2 rails.

Happy with the result.
2 more rails tomorrow.
Attached Images
File Type: jpg Mechmate.013.jpg (43.4 KB, 1658 views)
File Type: jpg Mechmate.014.jpg (51.9 KB, 1655 views)
File Type: jpg Mechmate.015.jpg (48.6 KB, 1650 views)
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  #24  
Old Tue 13 August 2013, 08:02
KenC
Just call me: Ken
 
Klang
Malaysia
The guard is ingenious! Love it!
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  #25  
Old Wed 14 August 2013, 03:56
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
All rails cut

I cut the other rails today.
It went better than yesterday (must be the practice).
I used 5 cutting discs on the 4 rails, just made it with the last disc.

I had a bonus.
I could not get 6 mm X 20 mm steel for the rail clamp strips.
The bits that I cut off the rails came off at 19mm.
That will do nicely thank you.

Might make a start on the base frame tomorrow.
Oh no ! Welding
Attached Images
File Type: jpg Mechmate.15.jpg (31.2 KB, 1613 views)
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  #26  
Old Wed 14 August 2013, 06:44
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Looks like great progress.
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  #27  
Old Wed 14 August 2013, 11:04
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
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Oh no ! Welding

Not to worry....it seems "worst" than it is !
Good luck
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  #28  
Old Wed 14 August 2013, 11:39
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
I learned ugly weld hold good also !!!
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  #29  
Old Thu 15 August 2013, 11:47
Andrew_standen
Just call me: Andrew #109
 
Dorset
United Kingdom
Oh no ! Welding!
that's what I thought, before I started my mechmate,
don't worry, its not as hard as it looks.
You will be ok, just take it one bit at a time.
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  #30  
Old Sat 17 August 2013, 07:57
lonestaral
Just call me: Al #114
 
Isarn
Thailand
Send a message via Skype™ to lonestaral
After a day of producing bird crap via a welding set and then grinding it off
I decided I needed some help.
Hire a welder.

Bulk of the base welded to a standard I am happy with in 1/10 of the time.

Lost a day due to thunderstorms and power cuts.
Axis strips cut,drilled, cross members drilled.
See how many Health and safety rules infringed on one of the photos.
In case you wonder why we wore shorts, look at the temperature.
Attached Images
File Type: jpg Mechmate.jpg (60.6 KB, 1548 views)
File Type: jpg Mechmate.017.jpg (61.6 KB, 1536 views)
File Type: jpg Mechmate.021.jpg (57.3 KB, 1531 views)
File Type: jpg SANY0004.jpg (36.1 KB, 1523 views)
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