On 2011-02-09, Pete C. wrote:

Ignoramus25972 wrote:

I have a little project which would be to put my 1,400 lbs generator
on a heavy duty Radio Flyer cart and make outboard legs, so that when
it is stationary and not being moved around, it stands on those legs
and is not supported the wheels of the cart.

To that end, I would need to drill an estimated number of 112 holes,
probably 9/16" or 5/8" diameter each, in 3/16" steel tubing.

This does seem like a great CNC project. My question is how to drill
them with minimum fuss. I would prefer, if possible, to avoid any tool
changes and general putzing around.

So, what is the CNC guru's approach to this? Just get a short 5/8"
drill bit? Or to bore them with something smaller?

I do not care too much if, say, boring takes a bit longer, the machine
will be working and not me. But I would personally prefer to avoid
tool changes and hassles.

i

Weld 3 or 4 of these on your cart and save yourself a lot of work:

http://www.harborfreight.com/2000-lb...vel-41006.html

Pete, I bought all the square tubing pre-cut from speedy metals. All I
need, if I got everything right, is to drill 120 holes (with CNC) and
then weld. It is not really much more work.

i