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I have to built a electric wheel chair for my father. Does any body has built ?

can we use CI crusibles ?

It is to be made of steel

Recently I was asked to replace a observatory installed at about 110 feet height. I have to build a Dome of size 17 feet dia with standard installations. But the problem is how to reach such height ?...

Does laser engraving comes in Kit form also? This is only to reduce the transportation cost

kindly give a list of reliable manufacturers in china for laser engraving machine.

How

how the backlash is controled as i saw gear box is also fitted

I have a Gorton 3D tracer, I want to fit stepper motor in its slides. how i come to know what power & size of motor i choose?

how old you are ?

I am going to retrofit my Gorton vertical milling machine to CNC. Which motor I should select "Servo or stepper" cost will be a major criteria.

I have Bridgeport, kindly advise how to calculate torqe for selection of stepper motors for X.Y & Z axis

I cant understand this photo? Is this creature in photo made on plasma or this is somthing else?

How much in total you spend?

I am trying to built a router based on JAGRO plans. which cheap & best software is reuired for running the same ?

I am 49. dream to own a cnc router. money a biiiiiiiiiiiiiiiiiiiiiiiiiiiiiiig problem

this is mine!
this is my idea!
this has been created by me!
Please sirs
pl. tell me, what is the thing which escapes from body at the time of death.
who had invented wheel, the gretest...

pl. load some photos of defective spindle

Any progress?
Have you find suitable stepper motors?
Please share your progress

I Had Gorton 3D trace master model 2-30. I want to fix stepper motors in place of hydraulic motors. What size, bi-polar/ uni-polar ??????????????? i purchase?

yes! i know, but i have some machines so i thought to earn somthing from these machines.

I am 48
I think the topic of poll should be:
" HOW YOUNGER YOU ARE ? "

Thanks. I will do this first. pl also tell me that how you had modified my photographs ?

Sir
I will try to built new boring bar first from solid rod. secondly please see theforth photo in which i had fixed the ball bearing directly on boring bar at the tailstock end. Is it right ?

coul you please tell somthing more about your brother? what he is doing in Afganistan? He is on technical side or fighter side?

Please see the photograps and give your valuable advise.

these are the photographs of boring bar and fixtures

Yes it is also a seamless tube. OD is 90 mm & ID is 70mm. If i made a boring bar from solid rod will it work? can the same boring bar will be used to bore 150 & 200 mm cylinders also?

Dear Sirs
The job is for pneumatic cylinders of different sizes. I fix the cylinder ( seamless pipe to be bored) on slide. I made boring bar out of 90 mm dia seamless tube of length about 2040mnm....

I have to bore one meter seam less pipe of diameter 125 mm inside. i have to bore the same to 128 mm. I made a boring bar about 2050mm of dia meter 90 mm. I coulkd not able to bore as there is...