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  #241  
Old Sun 07 February 2010, 04:42
aniljangra
Just call me: Anil #44
 
Delhi
India
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Half of the divider redone !

Had to redo this part of divider as the old one was not approved
new-upper.jpg
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  #242  
Old Sun 07 February 2010, 06:06
javeria
Just call me: Irfan #33
 
Bangalore
India
beautiful
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  #243  
Old Sun 07 February 2010, 06:09
jhiggins7
Just call me: John #26
 
Hebron, Ohio
United States of America
Beautiful. But, I thought the other one was beautiful as well.

How about some close-ups of the cuts so we can see the cut quality?
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  #244  
Old Sun 07 February 2010, 06:56
aniljangra
Just call me: Anil #44
 
Delhi
India
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More pics

John, I knew you would be the first one to ask for closeups , other one was also good but my customer (you know who !!) is more demanding

closeup1.jpg
Some manual cleaning of back side needed, i think again because I haven't surfaced the table yet.

closeup2.jpg
closeup3.jpg
closeup4.jpg

And below is the cutout part from the center of divider.
closeup5.jpg

Last edited by aniljangra; Sun 07 February 2010 at 07:02..
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  #245  
Old Sun 07 February 2010, 08:28
jessyjames
Just call me: James
 
Reno, Nevada
United States of America
Great job. I love seeing your screens. I must say that surfacing your table will dramatically improve your quality of parts produced. When you are able you should definitely make it a priority to do so as you will reap the benefits of it. Keep up the great work and make the "Boss".... happy..

James
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  #246  
Old Sun 07 February 2010, 11:19
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Anil what is the thickness of your mdf? as the thinner your board gets the more difficult it is to get a good cut as there is a lot of flex in the board itself.Try cutting a full sheet of 3mm mdf compared to 16 mm thick.
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  #247  
Old Sun 07 February 2010, 11:54
jhiggins7
Just call me: John #26
 
Hebron, Ohio
United States of America
Very nice. Very clean. I don't see any chatter marks. Congratulations.

I think we can declare your DIY Drives and BoB a wonderful SUCCESS!
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  #248  
Old Sun 07 February 2010, 23:51
quadtech
Just call me: Prasad
 
Hyderabad
India
Really nice work - inspiring for a slow one still in the info
gathering stage.
Anil, what motors are you using, and how
much did they cost? I think you got used ones?
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  #249  
Old Mon 08 February 2010, 04:19
KenC
Just call me: Ken
 
Klang
Malaysia
Nice & smooth cut, good job!
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  #250  
Old Mon 08 February 2010, 04:53
quadtech
Just call me: Prasad
 
Hyderabad
India
Anil,

I reread this thread, and found the pic of your motor
in post 41.

http://www.mechmate.com/forums/showt...5&postcount=41

Thanks
Prasad
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  #251  
Old Mon 08 February 2010, 05:05
javeria
Just call me: Irfan #33
 
Bangalore
India
prasad see last pic on this one

http://www.mechmate.com/forums/showt...&postcount=105
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  #252  
Old Mon 08 February 2010, 05:44
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Quote:
Originally Posted by quadtech View Post
Anil,

I reread this thread, and found the pic of your motor
in post 41.

http://www.mechmate.com/forums/showt...5&postcount=41

Thanks
Prasad
Thank you all for the appreciation.

Prasad, I used the motor as you saw i pic in post 41, but later changed x motors to smaller ones because I wanted to cut the space on both side of machine due to space problem.

On Z-axis i am still running the bigger (and old) motor with no problem. so you can get the old motors and they will work without problem.

I changed the motors not because of any problem but due to more space they were taking.
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  #253  
Old Mon 08 February 2010, 09:46
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Quote:
Originally Posted by hennie View Post
Anil what is the thickness of your mdf? as the thinner your board gets the more difficult it is to get a good cut as there is a lot of flex in the board itself.Try cutting a full sheet of 3mm mdf compared to 16 mm thick.
Yes I was cutting a puzzle for kids from 2.75mm mdf and noticed that bit was garbing the board and it lifted from table while cutting. I guess as suggested somewhere I need to use special (upcut spiral) bit.
By the way this board used for screens is 8mm and there was some lifting in the center where there was no clamps.

Quote:
Originally Posted by jessyjames View Post
Great job. I love seeing your screens. I must say that surfacing your table will dramatically improve your quality of parts produced. When you are able you should definitely make it a priority to do so as you will reap the benefits of it. Keep up the great work and make the "Boss".... happy..James
Sure I wanted to but my die grinder can take only 6mm bits, so waiting for the spindle. I may surface this weekend as I am getting the spindle soon
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  #254  
Old Mon 08 February 2010, 10:32
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Quote:
Originally Posted by aniljangra View Post
as suggested somewhere I need to use special (upcut spiral) bit.
The opposite - you want downcut spiral bits to push the board down.
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  #255  
Old Mon 08 February 2010, 11:27
aniljangra
Just call me: Anil #44
 
Delhi
India
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I see, what I have now are "upcut" and need "downcut" bits.
I thought the terminology is somehow opposite Thanks
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  #256  
Old Mon 08 February 2010, 21:39
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Anil, if you cut thin boards get some of the double sided tape that one uses for packaging it holds your project flat and reduce your cutting speed, it works for me specially when I cut small letters.
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  #257  
Old Tue 09 February 2010, 09:35
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Hennie, I'll try using double tape next time.
I used double tape for PCB but not for mdf as I was concerned about it sticking on cutting bit ! Is that fine bit cutting through tape ?
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  #258  
Old Tue 09 February 2010, 15:06
Jason Marsha
Just call me: Jason
 
B'Town
Barbados
Anil,
I also use double sided tape to keep my jobs flush with the cutting table. The 1/8"(3.175mm) and the 1/4" (6.35mm) bits have no problems with the tape.
I almost always use upcut bits but if the job lifts off the table then I will be forced to use downcut bits. You will have to reduce your cut speed with the downcut bit as it forces the chips down into the cut area as opposed to upcut bits which eject them upwards.
Sorry for any confusion

Jason
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  #259  
Old Sun 14 February 2010, 13:20
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Spindle Installed :)

Jason, Till I get downcut bits I will try double tape as suggested.

Got my spindle and made mounting plates for it.
spindle.jpg
Label says, GDZ-23, 80x215, 2.2KW
220V 8A, 24000 rpm, 400Hz

mount0.jpg
Bolting together top and bottom plates for machning.
mount1.jpg
Bore and attachment side are machined in one operation, and then cleaning other faces and drilling is done.

mounted.jpg
Mounted on MM and tested with Fuji VFD. Next week's agenda is to finish the cooling system and surfacing the table (finally )
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  #260  
Old Sun 21 February 2010, 10:33
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Spindle working without any issues now, there was noise problem but installing common mode filter at VFD output solved the issue.
spindle00.jpg
spindle01.jpg
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  #261  
Old Mon 22 February 2010, 01:47
Claudiu
Just call me: Claus #43
 
Arad
Romania
Anil, what is the green wire, how is it connected and where does it go?
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  #262  
Old Mon 22 February 2010, 02:23
vishnu
Just call me: vishnu
 
Coimbatore(TN)
India
I think it is for earthing, just a guess.
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  #263  
Old Mon 22 February 2010, 02:38
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Yes, Its ground wire, spindle power wire shield is grounded at both ends.
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  #264  
Old Wed 24 February 2010, 12:28
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
First cut with spindle , Spindle seems to cut through effortlessly compared to my die grinder and a lot quieter as well.
3d.jpg
size is approx 15"x20", took 3 hours and spindle was not even warm.
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  #265  
Old Wed 24 February 2010, 13:05
swatkins
Just call me: Steve
 
Houston
United States of America
That looks great!
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  #266  
Old Wed 24 February 2010, 19:42
jhiggins7
Just call me: John #26
 
Hebron, Ohio
United States of America
Anil,

Again, excellent work.

So is your spindle one of the ones referred to as a "Chinese" spindle?
Also, what water pump did you use and what does your heat exchanger look like?
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  #267  
Old Wed 24 February 2010, 23:10
Claudiu
Just call me: Claus #43
 
Arad
Romania
Nice work, Anil. Are you going to varnish ?
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  #268  
Old Wed 24 February 2010, 23:56
aniljangra
Just call me: Anil #44
 
Delhi
India
Send a message via Skype™ to aniljangra
Thanks you all for looking in
Claus, I have no clue what can be done for finishing as I am new to the world of wood/MDF etc etc, need to look around a bit.

John, yes its a "Chinese" spindle, connected to small submersible pump similar to fish tank pump. There is no radiator or heat exchanger, water just recirculates from a bucket, will post a pic if you want, but nothing fancy.

Thinking of adding a float switch, just in case pump stops in unattended usage.
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  #269  
Old Thu 25 February 2010, 07:15
jhiggins7
Just call me: John #26
 
Hebron, Ohio
United States of America
Thanks, Anil.

Yeah, I figured the "heat exchanger" was something like a bucket of water and that the pump was something like a submersible fish tank pump. I've noted that some people have used a pump with "stronger" specifications than the every-day variety of fish tank pump and I was wondering what you were doing regarding the pump.

As for finishing your relief carving, I like the MinWax stain products. One of the biggest problems in staining, is to get even coverage (no blotching). Also, depending on the wood species and stain product, you may have problems with grain raising.
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  #270  
Old Thu 25 February 2010, 11:50
digger
Just call me: Milosh #113
 
Toronto
Canada
Quote:
Originally Posted by jhiggins7 View Post
Also, depending on the wood species and stain product, you may have problems with grain raising.

Somebody mentioned that before you do final cut, spray surface with mist of water and then do final cut. Spraying will raise grain, and you will cut it in your final cut.
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