PC inside control box, using game controller #9 - Rajasthan,India
 

Hi all,
I am from India.
I have been reading for past 3 months. Now nearly all sourcing problem solved.
This is my first machine of this kind. I have little experience in this field and hope with help of you all experienced guys will manage to make this lovely machine.
Thanks to Gerald for his free plans and great efforts and to all who helped me with my questions.
I am posting photo of Laser cut and bend parts, which I think first of MM version.
Thanks to all.

Hello Sharma,

Great to know that finally its started for you. Let us know how much and where did u get your parts laser cut.

My best to you. I will be starting my Mamba soon by March, probably will have the controller running by then.

Keep us updated!

Welcome to the forum Sharma. Good luck with your build and let us know if we can help you.

Wow, Look at all those Mamba parts.....your the first to have the laser cut set of the Mamba. Good Luck.
Sean

Gee, is that what the Mamba parts look like? What a surprise! :)

Welcome Sharma - thanks for having the confidence to work direct off the plans. Hope you will not be disappointed.

Thanks Gerald and all,
I was awaiting for your encouraging words, I am very much confident that though for me it is very hard, laborious and long time project, I do accomplish it with your help and guidence.
I go office 8 to 5, five days a week, have little time left so progress may be slow but definate.
Right now I am arranging various parts from different sources they are in pipeline, I was lacking at tools and machinary, for which I am very fortunate that I got drill machine, welding machine, grinding machine, vices, calipers, screw guage and variety of tools from aquaints for free that have already saved me more than $500 worth purchasing.
The laser cutting company charged me $380 for these parts for laser cutting and cnc bending. Which seems almost double the normal prices, but besides my every efforts I could not get quote for one set. They are normally not interested in one set.
I will keep posting and seek advice on my snail pace progress :)

V-Roller need grinding
 

I have got 14 V-rollers, 10 eccentric bush (I know 4 extra) and 6 bearing bush all under $ 37 only. Rollers are hardened and need grinding.
I have these three coarse, medium and fine grit grinding square stones and tried on two rollers, it takes long time to for grinding.
Left roller is semi grind while right one is ungrind.
any suggestions on V-grinding? No source near me for such job.


http://img139.imageshack.us/img139/4666/vrollersqp1.jpg http://img340.imageshack.us/img340/7241/grindlr9.jpg

Before you start grinding, have you checked the wheels for distortion. Maybe they became oval during the hardening and the bearings will not fit? Just something to check before you spend a lot of time grinding.

Have you got cutting tool sharpening companies near you? These companies should be able to do the grinding.

Thanks Gerald,
I have checked and for bearings, they fit well.
Should I fit bearings and then grind, as you have already suggested ? While grinding rollers become quite hot that's why I did not fit bearings.
Actully the lathe guy used prehardened bar for rollers that's why tool marks are left on surface. He left 0.2 mm for grinding.
The lathe guys use their grinding machine for tool shrpening here, no such company is here.

Regards.

No, you do not need to fit the bearings for grinding. Glad to hear they fit well.

I was thinking of companies that sharpen milling cutters, not the lathe tools.

Maybe a call to this company:
http://hmtmachinetools.com/ajmer-complex.htm
and they can send you in the right direction?

This is Government company and rates are sky high, normally they accept big orders and perform heavy mahinary jobs.
If the grinding need special skill, then I had better find source for it, otherwise if 0.2 mm tolerance is acceptable I should give a try :confused:

I suggest you call them, ask to speak to the toolroom, and then ask the preson there if they can make suggestions for you. They should know which small company outside their organisation does special small jobs. It is a chance, maybe you are lucky. Its a better chance than asking me! :)

Ok, I ask them in person on Monday. Thanks.
Regards.

One major goal achieved
 

Well this thread tempted me to post my achievement.
The cutting and 45 degree grinding of angles was easy with skates but a lot of dust, one should invariably use mask, ear plug goggles and gloves. Cutting disk INOX 1mm (3 consumed), grinding disk BOSCH.
I suggest using little grease on surface while grinding so that skate bolt moves smooth. Removing scales/smoothning out of both sides and under the angles is also necessary for free bearing movement and flat surface. I must say this was piece of cake with SWEAT :) .
Thanks Gerald.

p.s. I am working in very cramped space so can't take good photos from distance.

Y tube problem
 

Gerald,
Thanks for placing my post in right thread.

I am facing a peculier problem. I found that my Y tubes are approx. 45 x 94 mm (45 top and bottom while bulging in centre to 50 mm). Not true rectangular.
Stiffening closures are hanging around 6mm outside Y tube. Now I have left with only option to place & weld Y strip outside tube as per attatched photo.
What are the consequence I am going to face ? As far as I remember I have seen doing this by one member but can't find that thread now. While with good welding it should not be a problem and I should also attain right height. Is this OK ?

That is not a problem. You do not need to weld a "y-strip" on top of the tube - welding will do more harm than good. Still clamp your rail direct to the top of the 94x45 tube. You can cut the stiffening closure a bit shorter so that the rail goes right across the top. You can also lift the tube 2mm higher up, but if you go too high then the weld number 2 gets difficult.

Because your tubes are not good rectangles, you must try harder to get the top surfaces horizontal in the x-direction. If those surfaces are horizontal from one tube across to the other, you have no other things to worry about.

And don't worry if you get twist in your gantry due to welding.

There is an easy fix. ;)

Thanks Gerald

Ha Ha that's right. Now we know a working solution now.

It's working
 

I don't have a straight router bit, so I used masonary carbide tipped bit:;.
Thanks Gerald & everybody for your kind help and encouragement. MISSION ACHIEVED.
All blue table :) (credit goes to confined space) and don't mind that broom stick ;), have to clean myself.
Gerald may I humbly request for 2nd last #9 :)

Here is small video footage, not a good one, but showing first Indian Mechmate cutting .;)
http://www.youtube.com/v/18fKWslHZAE

Sharma,
Those pictures look great, you should be very proud of your achievement. Well done. :)

Applause!

Thanks Gerald for #9. I gained (learned) a lot during this built and lost one tap drill one drill a hammerd finger, some cuts and bruises and of course lot of sweat and amnesia :)
Thanks Heath
Of course I and my family are very proud of this achievement.

Beautiful!!! Congratulations.

Congratulations on your Baby Mechmate. May you nurture and treat her well. :)

Sharma,

Congratulations!! You graduated. :)

She's a beautiful blue beast. :)

Thanks guys for your kind words.

Hello Sharmaji, my hearty congrats to you SIR.

now get some good ER16 collets and carbite bits and start working - carving - Rajesthani style -

My best to you.

Have fun with your new baby!

Well done! Enjoy!

Nice Toy !!