build your own cnc
 

too big for my budget but still good inspiration

i have only seen this video but there are more of his project

https://www.youtube.com/watch?v=XNvoFTV5tIE


wondering if he will marry this with a lathe

build your own cnc
 

On Thu, 26 May 2016 14:36:35 -0700
Electric Comet wrote:

https://www.youtube.com/watch?v=XNvoFTV5tIE

he never says what the problem was that caused the entire steel frame
to warp

not having done much welding i would have to guess that he should have
clamped things to a rigid frame while it cooled so it did not warp

that is a guess but i cannot think what else would cause it to
bow or warp like it did

build your own cnc
 

On Saturday, May 28, 2016 at 1:24:22 AM UTC-4, Electric Comet wrote:
On Thu, 26 May 2016 14:36:35 -0700
Electric Comet wrote:

https://www.youtube.com/watch?v=XNvoFTV5tIE

he never says what the problem was that caused the entire steel frame
to warp

not having done much welding i would have to guess that he should have
clamped things to a rigid frame while it cooled so it did not warp

that is a guess but i cannot think what else would cause it to
bow or warp like it did

Welding by itself can cause warping. Read up on it and you should quickly realize that welding is both a science and an art, not just a skill...

build your own cnc
 

On Thu, 26 May 2016 14:36:35 -0700
Electric Comet wrote:

too big for my budget but still good inspiration

i have only seen this video but there are more of his project

watched some more of the process of making his own cnc

wonder if he saved any money


buying a used cnc would make more sense

and if you need vertical ability maybe it could be modified
for that feature

build your own cnc
 

Electric Comet wrote in
:

On Thu, 26 May 2016 14:36:35 -0700
Electric Comet wrote:

too big for my budget but still good inspiration

i have only seen this video but there are more of his
project

watched some more of the process of making his own cnc

wonder if he saved any money

Absolutely he saved money but his machine won't be as
accurate as one purchased. Buying something comparable to
what he built would start at over $13k.



buying a used cnc would make more sense

That's fine if you can find one the size you need. I searched
for used for almost 2 years before I gave in and built one.


and if you need vertical ability maybe it could be modified
for that feature


More vertical (Z) travel introduces Y & Z axis flex into the
equation. Get only the height you need and nothing more. If
needed figure out a way to remove the table and clamp the
project below the normal table surface.

build your own cnc
 

On 09 Jun 2016 01:02:29 GMT
Larry wrote:

Absolutely he saved money but his machine won't be as
accurate as one purchased. Buying something comparable to
what he built would start at over $13k.


it is a big machine he built
but if it is not accurate than how much do you save

maybe he can adjust things over time but not sure about that

maybe i missed it but i did not see any mention of leveling the table
or any leveling features for that matter

i was surprised when he shimmed the table top because i thought he
should have leveled the base to the floor

at least he did not let perfect get in the way of good enough though

can always tweak things as you go


That's fine if you can find one the size you need. I searched
for used for almost 2 years before I gave in and built one.

i see a few here and there
i noticed that lagunatools has some from time to time

More vertical (Z) travel introduces Y & Z axis flex into the
equation. Get only the height you need and nothing more. If
needed figure out a way to remove the table and clamp the
project below the normal table surface.


i think that doing that makes it much more versatile and useful

build your own cnc
 

On Wednesday, June 8, 2016 at 11:03:20 AM UTC-7, Electric Comet wrote:
On Thu, 26 May 2016 14:36:35 -0700
Electric Comet wrote:

too big for my budget but still good inspiration

wonder if he saved any money

buying a used cnc would make more sense

Rather, less sense. He had any size of his choice, capabilities (including vertial mount)
that are unlikely to be available off-the-shelf, and all tolerances were his to specify
and build to.

It's likely he is much happier with a custom tool, rather than whatever-is-available
either COTS or used. He spent money, he got value for it. "Save" wasn't the goal; that
oughtn't ever detract from the primary concerns.

I once chatted with a carpet-cleaner as he unrolled, washed, dried, and re-rolled a massive
rug using a big motorized drum with excellent controls; he built it himself, and it was
just about perfect for the job.