Author Topic: rotary tool plan.  (Read 577 times)

kibodwin

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rotary tool plan.
« on: May 16, 2017, 07:08:32 AM »
So I am getting the parts together for a rotary tool and following the plan I have (on a post-it, cos that’s the way I roll). I am a firm believer in the KISS methodology so;

Would it be better / worst to use the Y or Z axis for this? I ask as the Y axis has 2 stepper motor plugs and the Z only one (making it easier to only unplug one stepper motor and not too, I know a huge difference!) My first thought was to use thee Y axis (use one motor plug for the rotary tool and just leave the other unplugged) but thinking about it it might be better to use the Z and turn the whole thing around 90 degrees. I also only plan to have one stepper motor on the rotary tool (hence the Y/Z debate) even though I see slightly more complicated designs with 2 stepper motors and timing belts.

I plan to 3D print as much as possible so the bearing mounts, motor mount, ‘spacers’, coupling will be printed and to use 608 skate bearings and threaded rod and nuts (though I would also like to 3D print these just because!). The mounts and coupling are already on thingiverse so I will use them and adapt as needed.
Rubber bands will be used to give the ‘spacers’ some grip.
I plan to build all of this on some pegboard so I am able to vary the width to accommodate pen blanks to rolling pins.

B.O.M.
6 X 608 skate bearings
6 X 608 bearing mounts (thingiverse http://www.thingiverse.com/thing:360 )
4 X ‘spacers’ (this is what the object will spin on) (3Dprinted tinkercad / openscad  http://www.thingiverse.com/thing:953338 ) or more depending on need, these can also be of variable sizes to better hold the object.
2 X threaded rods (whatever I have on hand, smooth rod could also work) undecided on the length but will satre with 20cm+-
8 X nuts for threaded rod (to keep everything in place on the threaded rod) (thingiverse http://www.thingiverse.com/thing:27769 )
1 X nema 17 stepper motor
1 X Stepper motor mount (thingiverse http://www.thingiverse.com/thing:960100 )
1 X stepper motor coupler (thingiverse http://www.thingiverse.com/thing:1329750/#files )
Pegboard (http://www.thingiverse.com/thing:2145069 !!!! =)

If there is interest I can post the ‘plans’ I have. Off to source some cheap drumsticks, pen blanks and rolling pins!!
Ki
=)
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
Software: T2Laser
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ThothLoki

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Re: rotary tool plan.
« Reply #1 on: May 16, 2017, 08:27:05 AM »
Most rotary addons that I have seen replace the Y axis. Honestly, I think it all depends on the size of the piece you are working on. You could go either way.

Personally, I would probably use my X axis as I am using an A5 machine.  That way I can do larger pieces.

I hope to create a rotary tool at some point. Still slagging away at slate (and testing glass) until I get my 3D printer
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
3D Printer: Monoprice Maker Select v2.1
Image Resizer Applications (All OS): http://benboxlaser.us/index.php/topic,1434.msg17297.html#msg17297

Zax

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Re: rotary tool plan.
« Reply #2 on: May 16, 2017, 09:39:58 AM »
I would recommend to use one Y-axis connector and leave the other disconnected.

kibodwin

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Re: rotary tool plan.
« Reply #3 on: May 16, 2017, 10:54:15 AM »
I would recommend to use one Y-axis connector and leave the other disconnected.
any particular reason why?It feels more natural so I might start this way but like ThothLoki it will depend on the size of the stuff i engrave.
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
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ThothLoki

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Re: rotary tool plan.
« Reply #4 on: May 16, 2017, 11:13:36 AM »
If you want the best quality, use the Y axis.
If you are moving the Y axis and not the X, there is the chance that the laser could get wobbly or start to move position. With the motor powered down, the x axis would be free to move.

I think why some people use the Y axis for the rotary part is that with the X axis moving, the gantry is less likely to move even with the Y axis motors in "free spin" mode because there is a log more weight and tension (gantry itself, two belts....) keeping it in place.
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
3D Printer: Monoprice Maker Select v2.1
Image Resizer Applications (All OS): http://benboxlaser.us/index.php/topic,1434.msg17297.html#msg17297

Zax

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Re: rotary tool plan.
« Reply #5 on: May 16, 2017, 11:51:27 AM »
It's usually better to scan with the lowest mass axis (X) so using the Y for the rotary gives you the best setup.

kibodwin

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Re: rotary tool plan.
« Reply #6 on: May 16, 2017, 12:56:07 PM »
thanks for the info Zax, appreciated. Will do as I am told from now on!
=)
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
Software: T2Laser
Prusa i3 Clone GT2560 cura
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ThothLoki

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Re: rotary tool plan.
« Reply #7 on: May 16, 2017, 01:49:59 PM »
thanks for the info Zax, appreciated. Will do as I am told from now on!
=)

Don't hold too tightly to that. I was told initially that we could not engrave anything other than wood and plastic. Don't forget to add glass, slate, bread, some metals, apples and other stuff to the mix. Remember, this machine was not built "for cutting". Um, don't we have a software or two that can cut wood on this forum? Wasn't this forum CREATED because of something like that? ? ?  ;D
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
3D Printer: Monoprice Maker Select v2.1
Image Resizer Applications (All OS): http://benboxlaser.us/index.php/topic,1434.msg17297.html#msg17297

kibodwin

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Re: rotary tool plan.
« Reply #8 on: May 16, 2017, 02:36:58 PM »
damnation to you, I am now off to look for an apple!
I want to know how it smells and how well it engraves..
=)
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
Software: T2Laser
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Kunaphil

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Re: rotary tool plan.
« Reply #9 on: May 16, 2017, 04:12:15 PM »
You guys funny ;)
Just got my home switches installed!👍

kibodwin

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Re: rotary tool plan.
« Reply #10 on: May 16, 2017, 10:37:11 PM »
The way things are these days you either cry or laugh about it all, I prefer to laugh.
;-)
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
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kibodwin

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Re: rotary tool plan.
« Reply #11 on: May 22, 2017, 10:48:53 AM »
So I got delivery of some stepper motors and even though the plug on the end is not the correct one for the eleks board I plugged it in to see if it would work. And it did! Chuffed.
http://i441.photobucket.com/albums/qq140/kibodwin/Mobile%20Uploads/IMG_20170522_185412_HDR_zps4kiikfmd.jpg
This is the wrong plug thing that still works. I will need to tape it in place so it does not fall out.
http://i441.photobucket.com/albums/qq140/kibodwin/Mobile%20Uploads/IMG_20170522_185404_HDR_zpsvazri06y.jpg
This is a very quick setup to test it all. The bamboo is what I had on hand and I just jammed it into the motor axe. It does not turn evenly and sort of walks along the wood I put on the end to support it. I also did not even focus the laser. It is a real quick and dirty setup, but it works!
I am 3d printing proper parts to make a decent tool. Looks like hight will be a bit of an issue but I plan to put blocks under the frame feet to compensate.
A little video to share the joy!
http://s441.photobucket.com/user/kibodwin/media/Mobile%20Uploads/VID_20170522_190142_zpsctbownnd.mp4.html
Happy, happy, happy!
 ;D
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
Software: T2Laser
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Stonemull

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Re: rotary tool plan.
« Reply #12 on: May 22, 2017, 06:03:35 PM »
My dad gave me 10 unfinished pen blanks to have a go with, these are good ones, just not been waxed or polished or had a final sanding.
So I will be revisiting this in the next few days. I have some jitter in my X axis to get rid of again at the moment.

Are you making a small jigger or a large one ?


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kibodwin

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Re: rotary tool plan.
« Reply #13 on: May 23, 2017, 12:59:41 AM »
as low as possible, I want to get as much room for larger objects as possible (between the 'rollers' and the laser). The length will be about 15cm long for now but this can be changed by increasing the length of the rods used. The height I am aiming for is the have the rods at the height of the axle of the stepper motor. Then there will be the height of the 'rollers' in contact with the circular object..
Does this help?
http://i441.photobucket.com/albums/qq140/kibodwin/Mobile%20Uploads/IMG_20170523_095921_HDR_zpsgmekwmu8.jpg
Let me know if I am not making sense!
=)
« Last Edit: May 23, 2017, 01:02:53 AM by kibodwin »
Laser: 2500mw A5 eleks maker L5
OS: Windows 7, Debian, OpenSuse, Kali
Software: T2Laser
Prusa i3 Clone GT2560 cura
Anycubic Kossel Delta ramps

Stonemull

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Re: rotary tool plan.
« Reply #14 on: May 23, 2017, 03:46:50 AM »
I couldn't play your photobucket video, so you are wanting to do larger objects like rolling pins still?
Is there idler rollers and the object sirs between them ?
A3 Eleksmaker 2500mW
Solidoodle V2 Pro
Hacked Roland DXY-880