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Hello everyone,
I would like ask for advice with anodizing.
I try to anodize 5082 aluminium just for hardened surface, not for dye, just for natural look.
I have two lab power supplies, first 0-3A...

Thank you for clarification, that will safe my time, I wanted to make another holder with wider hose diameter just for test.
I will try to hold down piece of aluminum 50x50mm and only 50% of that...

Hello guys,
I have question about vacuum holding. I use vacuum pump with max -1bar / -30Hg.
My question is, if I connect pressure pot with tube 6mm diameter to holder with sucking area 5x5cm, is...

Hello guys,
does anyone know is it possible to create in FreeCAD toolpath for threadmill tools like on picture ?
I mean step in the hole in centre down and then start helix up direction with ending...

Ah, ok, I understand now, this left screw, when there is no continuity in my case. I can use just for easier attachment
of wiring from terminal 9 with additional wire and connect it with power cord...

Hello mactec54,
I measured with multimeter and there is no continuity between terminal 9 and screws, or between screws. They are just holding this peace of
electronic together. Electricians I know,...

Hello guys,
there is so many informations I do not understand and are out of topic. What
nobody mentioned if it is possible, when spindle was not grounded, could it be possible
that could destroy...

Hello mactec54,
thank you for description and advices. I know that it is pain to look into it for
someone who understand it. Anyway I did some corrections about wiring. I have two setups of...

Hello guys,
I have a question for skilled ones in electricity since I do not understand it. I had accident and would
like to know if it could be happen by switching spindle for ungrounded one.
I...

Thanks for advices.
Its just flat material and need V groove 120° without rotating on vice.
Drill mill suits my needs, but what I have found, that these drill mills
are all made in USA ? They are...

Hello guys,
can someone recommend me some tool for ER20 for milling V groove into aluminium 5083.
I need to mill deeper 120° in few passes and do not want to flip material in angle.
I have only...

Ok, meanwhile...

I think native is 6400 counts in my servo resolution, I can set more, but motors are 6400.
I had support that tuned for me all motors, they did great job. Now it
is almost...

Hello,
you're right, it probably does not run synchronously.
How big is error I cannot answer because I cannot read the chart.
I will ask support how to read it properly. But on last tweak I...

Well,
I preloaded everything, carriages and ballsrews. And result is same.
I tried test cuts and straight X and Y are supersmooth, but something in
angle is becoming rough, the peak of roughness...

Ok, so I played with machine through the weekend.

- I tried to realign ballscrews for straightness from the motor shaft to the other side as much as I can.
- I tried realign rails (they are...

Hi,
Could you disconnect 1 motor...

I already did as I mentioned before, it was the same result, same pattern. I also tried to loose bolts connected to X to have as much freeness to one side -...

FF and FK are changed completely for new brands ones.

If you move the carriage using the ball screw (jog 5 times the pitch) can you measure the movement of the carriage opposite the direction of...

I use FF and FK. I changed all ballscrews from C7 chinese ones to C5 brand ones, also FF and FK.
Nothing changed, what remains are rails HGR20 with HGH20 carriages, they are cheap chinese unknown...

Thanks for suggestion.
So I did test. I added photos. It is little bit challenge because both 20° and 70° were smooth, not so perfect like straight cut but smooth.
It was very difficult to tell...

I have made another test. I removed one Y ballscrew and did cut on more rigid side. Same pattern like it is with two ballsrews.
Is it possible if I had bad rails with carriages and since they are on...

Pattern seems to be same, just in higher speeds more visible.

Hello guys,
so I installed new ballscrew on X and improvement of surface finish on 45° or arc cut is only tiny.
I also tried to change 4x carriage HGH20 under X (not rails, do not have another...

Hello,
so I had servise assistance from engineer, they tuned
both axis profiles and position error curve is now flattened. They
told me that maybe I will not recognize difference in cut, because...

I know this tuning, I did it several times but it seems does not work properly.
Lets wait to next week, I will know more. The pattern is on all axis

All of them 1200mm, I think it is not resonate, still it is 3 turns per second, that is not many.
Coupler type is similar to the picture.

I used diagnostic for position errors and there is wave...

10mm pitch, all of them, It is 1610. Motors are attached by couplers to screws and then through thick plates with FK and FF.

Hi, I will try look for this resonance errors, I have some diagnostic tool for it. I can try cut 1/10 speed if it helps.
Also I ordered new screw for X because the source of it is uknown, after...

Yes, I change setting on both, grbl and stepper driver. Also tried climb vs conventional, climb has nicer finish, but result is same wavy pattern. I milled cube 60x60mm, after measure its 60x60, so...

Hi, I use 640 steps/mm, also tried 320, 160, 80. Still same. Yes, X and YA is ok, It can be much smoother with slower speed. Could it cause when ballnut is not attached to plate precisely 90°, is it...

Hello guys,
I am new here, as the hobbist in CNC I use grbl few years now.
I have some problems and think I am not able to solve it by myself.
I have feeling that it must be somehow arduino or...