Recent Activity
Activity stream for all registered members at OpenBuilds.
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Rick 2.0 replied to the thread Stepper motors for building a elderly lift.
Lifting is all a function of mechanical advantage. Define your lifting mechanism first, then select your motor. Motors themselves don’t...
May 16, 2024 at 3:14 PM -
Rick 2.0 replied to the thread 3 Phase CNC machine question.
That’s a question best asked of the vendor. I’m seeing variability across that model and it’s all likely based on end user specifications.
May 16, 2024 at 9:27 AM -
David the swarfer liked Peter Van Der Walt's post in the thread Build a machine rather than buy a Genmitsu 4040 Pro?.
There should be reviews online somewhere :) but I can't point you at any off the cuff, we don't really do the influencer thing so...
May 16, 2024 at 5:16 AM -
David the swarfer liked Peter Van Der Walt's post in the thread Build a machine rather than buy a Genmitsu 4040 Pro?.
The OX is quite an old design from the early OpenBuilds days. Belt driven, relatively flimsy, needs custom plates etc. No longer...
May 16, 2024 at 5:15 AM -
David the swarfer replied to the thread Ask Grbl CNC questions here..
15m with the right cables will not be a problem. wifi WILL be a problem, the slightest glitch will cause sync errors and the gantry will...
May 16, 2024 at 5:13 AM -
Rick 2.0 liked Peter Van Der Walt's post in the thread Build a machine rather than buy a Genmitsu 4040 Pro?.
There should be reviews online somewhere :) but I can't point you at any off the cuff, we don't really do the influencer thing so...
May 15, 2024 at 9:02 PM -
David the swarfer liked Peter Van Der Walt's post in the thread Is my build orientation correct ?.
X- must move the tool to the left X+ must move the tool to the right Y+ moves tool toward the rear of table Y- moves tool toward the...
May 15, 2024 at 2:28 AM
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Justin Brawley replied to the thread Random starting points help.
I see what you were saying the fake the home method is the calibration of the steps. I did that this morning and it seems to be working....
May 14, 2024 at 11:06 AM -
JustinTime replied to the thread Huanyang 1.5kw VFD 110v VFD fries.
I have a 1.5kw air cooled spindle and the VFD never gets even warm. One thing I did that not many mentioned, and may not be relevant, is...
May 14, 2024 at 9:48 AM -
David the swarfer liked Peter Van Der Walt's post in the thread Standalone Torch Height Controller for CNC Plasma Cutting.
Hook up an oscilloscope watch the peaks of all the back EMF and cable inductance dumping back into the drivers at the time it switches....
May 14, 2024 at 8:46 AM -
David the swarfer replied to the thread Interesting CNC Lathe.
some do, some don't. Tormach is commercial, so it Millright and they both have conversational interfaces.
May 14, 2024 at 8:44 AM -
David the swarfer liked Peter Van Der Walt's post in the thread Standalone Torch Height Controller for CNC Plasma Cutting.
Note connecting and disconnecting a powered stepper motor from its driver -even by relay - will ruin your stepper driver. Not if, but when.
May 14, 2024 at 3:24 AM -
David the swarfer replied to the thread Interesting CNC Lathe.
most commerical cnc come with 'conversational programming' built into the interface. Notable is Pathpilot built on top of LinuxCNC on...
May 14, 2024 at 3:21 AM -
David the swarfer replied to the thread Squeaky, creaky, whiney machine..
dial down to 8x microstepping, you don't need more than that. then you will be able to increase the acceleration and max speed too.
May 14, 2024 at 3:13 AM -
David the swarfer replied to the thread Torch Height Control Anti-Dive Functionality for Fusion Post Processor??.
I am wondering what causes this diving that makes antidive necessary? (is it some fundamental problem with the THC?) do we know for sure...
May 14, 2024 at 3:09 AM