If that is the bottom flange, just cut it off 2" above the flange,
shorten the tube and but weld the tube back together again.
If it is welded properly, then there will be no loss in strength. No
machining is required.
If you haven't done much welding before then it makes sense to find
someone
Actually the flange in question is on the simplest end. The other end
of the tube has more features. I am inexperienced in welding and may
consider taking it to a professional. I have welded angle iron together
to make table frames, but in this case I feel it needs to be super
accurate as it
Hubert,
You might want to consider leaving the flange in place and to cut the
tubing to shorten it/lengthen it.
If you are making it shorter, chances are it will be stronger than needed.
If your bandsaw makes a bad cut, mark the tubing, and grind it square.
Dave
On 10/15/2016 10:57 PM, hubert w
It your band saw one of those freestanding units with vice-like clamp and
an automatic shutoff switch. I have one of those HF band saws that can
cut 4" square stock. They cut straight enough for a part that will be
welded later. a 1/16th inch error is is OK. Those saws are great, mine
will do
Actually after thinking about the problem and the tools available I
would cut a section out of the pipe above the base plate by scribing a
mark all the way around and only cutting one side at a time with the
band saw. Then jig it up with some flats to hold the two parts in line
and put a good t
I would use carbide as the welds tend to be very hard. Before milling I
would use a very coarse grit wheel on my angle grinder to grind as much
weld off as possible. The welded place is most likely warped from the
welding so watch for that when you try an mill.
JT
On 10/15/2016 9:57 PM, hubert
ing much of
it away.
From: hubert
To: Emc-users@lists.sourceforge.net
Sent: Saturday, October 15, 2016 8:57 PM
Subject: [Emc-users] Using CNC mill to hack a gantry Crane
I am wanting to cut down a 1000lb rated gantry crane to a size that will
fit my Shop. This crane is made from
I am wanting to cut down a 1000lb rated gantry crane to a size that will
fit my Shop. This crane is made from 2" rectangular tubing. I will do
the initial cutting with a Harbor Freight band saw, but I can't count on
it giving true 90 degree cuts. My thoughts are to true the cut surface
with
