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Messages - SteveK

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1
Assembly Help / Re: How hot do stepper motors get?
« on: March 26, 2018, 11:26:35 AM »
You guys are pretty amazing!! Turned it down to .25 and it's been running for about an hour and is barely warm to the touch. I'd just assumed it was working too hard and almost didn't even ask. Thanks to  you both once again!!

Steve

2
Assembly Help / Re: How hot do stepper motors get?
« on: March 26, 2018, 09:23:31 AM »
That's high for a single motor, you should be somewhere around 0.2~0.3V.

Okay, I will adjust it, I thought I'd read .5 was about right. While I was at it I checked the y axis and it's .64, should I crank that down a little as well?

Steve

3
Assembly Help / Re: How hot do stepper motors get?
« on: March 26, 2018, 07:58:58 AM »
Okay, according to my meter the pot is set at .49V, is it possible I'm just working the motor too hard? I can actually touch the motor when it's working but I remove it pretty quickly.

Steve

4
Assembly Help / Re: How hot do stepper motors get?
« on: March 25, 2018, 12:14:52 PM »
Thanks for the replies, I will check the voltage.

Steve

5
Assembly Help / How hot do stepper motors get?
« on: March 25, 2018, 08:11:22 AM »
On my rotary machine I have two motors on the y axis, the axis I use to rotate the work piece. The x axis, which drives the ball screw to move the laser back and forth has one motor. The two rotational motors get warm but the x axis motor gets too hot to touch. Is this normal and/or acceptable? If not, I think I have two options, get a beefier stepper motor or invest in a 3 axis mana se and put two motors on the ball screw as well. I want to keep two motors for the rotation because eventually I'll be turning some larger work. Any thoughts or suggestions or do I just not need to be concerned?

Steve

6
Are you using DXF? If so ignore my comment.

LOL, had me going, didn't know for sure what I was looking for. Yes, most everything I do is a DXF, just haven't explored doing jpg's as yet. Do you have a thought as to whether I'm on the right track or not?

Steve

7
What did you have resolution set to?

It seems like that would have to match the Inkscape resolution for this to all line up.

From memory I believe it was .1 After poking around in Inkscape and looking at the resolution in T2 I must admit I'm not sure exactly what you mean that the resolution between the two programs should match.

Steve

8
What did you have resolution set to?

It seems like that would have to match the Inkscape resolution for this to all line up.

Quite honestly, that's something I hadn't even considered. Still don't understand all I know about either program. I will experiment some more and see what happens. For the record, I appreciate your thoughts and replies on this.

Steve

9
I am not sure if I understand, but wouldn't it be the same as using the output size option in T2Laser with Aspect Ratio disabled? It will stretch or compress to meet a fixed dimension.

I think using the output size option works well and gives a similar result. When I'm making the rings for the cryptex boxes I always disable the aspect ratio as they are typically 12.7 wide but the diameter will vary slightly from one box to the next so I change the output size from box to box for a set of rings.

It occurred to me if I could write a document that would equal one rotation regardless of diameter it would be a setting I wouldn't have to set and possibly forget or make a typo. Also, if a document was equal to one rotation it would print on a 3" ring or a 12" vase without changing any settings. It would be like a universal file that would work with any diameter.

I thought I could do it with the scaling feature in Inkscape but as yet I haven't gotten that to work like I thought it would. The shaft on a stepper motor is 5mm diameter which is 15.707963 mm in circumference. I divided that by 360 to get travel per degree, I then multiplied that by 10 to get travel per 10 degrees which gave me .436332312mm. (Extra step I know) Using the scale feature in Inkscape I made one unit(mm) equal to that number and made the document 36mm by 12.7 and entered the diameter as 36 in T2 but it didn't work.

Steve

Steve

10
Does it shrink the design to fit the circumference?

Basically, or it makes it bigger. Whoever wrote the extension has tied pixels to the steps in the rotation of the motor(I guess). I don't believe it physically computes and changes the length, it's just that the surface travel changes with the diameter.

Steve

11
Sure, just use the circumference of the item for the size.

Zax, that's what I've been doing but that's not what I'm talking about. To write a pattern with the eggbot extension in Inkscape the document is always 3200 pixels wide by whatever height(within limits)a person wants. The diameter of the object doesn't matter. The file will write the entire circumference and the pattern will fall where it may. Could something like that be done with T2?

Steve

12
T2 Engraving / Create a dxf to equal one rotation on a rotary axis?
« on: March 18, 2018, 05:29:36 AM »
Is it possible or would it be possible to create a dxf in Inkscape that would equal one rotation on the rotary axis? I remember from using the eggbot extension in Inkscape that's what I did.

Steve

13
Projects / 2nd cryptex
« on: March 17, 2018, 10:14:35 AM »
Here is the second cryptex I've made with the rotary engraver. This one has a five ring code and I changed the pattern for border rings. I like the look of this one much better.  FWIW, each border ring was burned twice to get the pattern dark enough and to take out some light spots. It's simply amazing to me how repeatable these little stepper motors really are. The rings are maple and the end caps are walnut.
 Steve


14
Projects / Re: My first project from a rotary machine.
« on: March 10, 2018, 05:01:03 PM »
Very nice work!!! It is people like you that keep me trying to do better.

Btw, what rotary do you have?

Thank you! My machine is home made, loosely based on the eggbot design.

Steve

15
Projects / Re: My first project from a rotary machine.
« on: March 10, 2018, 02:31:36 PM »
Amazing work Steve. Thatís planning ahead too, or do you have that many grandkids  ;D

Thanks Zax. 7 grand kids to this point but I never liked waiting until the last moment. I will do several and pick out the best ones for gifts.

Steve

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