# Help with simple trace construction lines

**URL:** https://forum.arcdroidcnc.com/t/help-with-simple-trace-construction-lines/2988
**Category:** General Discussion
**Created:** [June 14, 2023, 7:44pm UTC](https://forum.arcdroidcnc.com/t/help-with-simple-trace-construction-lines/2988 "2023-06-14T19:44:46Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![launch\_pad\_mcduck200](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.arcdroidcnc.com/launch_pad_mcduck200/32/756_2.png) [@launch\_pad\_mcduck200](https://forum.arcdroidcnc.com/u/launch_pad_mcduck200)
#### Post date: [June 14, 2023, 7:44pm UTC](https://forum.arcdroidcnc.com/t/help-with-simple-trace-construction-lines/2988/1 "2023-06-14T19:44:46Z")

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So my project in simplest terms is very similar to a wheel spacer for a S10- but it is not actually that. the project is a 6 inch outer circle, a 2 inch concentric inner circle and FIVE 1/2 inch bolt holes on a 4.75 concentric dia.

ok so i am working from the inside out to avoid the drops moving around. the 2 inch inner circle is ez pz but i am getting stuck on the bolt hole circles. . . . google does not appear to help. so is this part too complicated to do at the arc droid machine itself and need to be transferred over from a proper computer? do I need to convert the bolt holes to Cartesian coordinates?

thank you in advance

Launchpad

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### Author: ![Andrew](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.arcdroidcnc.com/andrew/32/52_2.png) [@Andrew](https://forum.arcdroidcnc.com/u/Andrew)
#### Post date: [June 14, 2023, 9:35pm UTC](https://forum.arcdroidcnc.com/t/help-with-simple-trace-construction-lines/2988/2 "2023-06-14T21:35:13Z")

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@launch_pad_mcduck200

If you have a reasonable up to date version of Simple Trace on you ArcDroid you can use the "bolt Hole Circle Function in the shapes menu of the Trace screen

 ![image](https://us1.discourse-cdn.com/flex016/uploads/arcdroidcnc/original/1X/695e640d9e46d7fb9b31e4cbfef122c9ce02986e.png)

this will give you all the option you need to create the BHC including Diameter and # of holes

 ![image](https://us1.discourse-cdn.com/flex016/uploads/arcdroidcnc/original/1X/852c16811c1fb3a0cfd2cd0f6cf3afbf453ee003.png)

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<div class="post-metadata">

### Author: ![launch\_pad\_mcduck200](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.arcdroidcnc.com/launch_pad_mcduck200/32/756_2.png) [@launch\_pad\_mcduck200](https://forum.arcdroidcnc.com/u/launch_pad_mcduck200)
#### Post date: [June 14, 2023, 9:59pm UTC](https://forum.arcdroidcnc.com/t/help-with-simple-trace-construction-lines/2988/3 "2023-06-14T21:59:30Z")

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Sweeet!

Thank you so much Andrew! I had thought I was up to date but apparently, I am not. I will address this in the AM tomorrow because today other activities demand my time.

thank you again!

Launchpad

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<div class="post-metadata">

### Author: ![launch\_pad\_mcduck200](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.arcdroidcnc.com/launch_pad_mcduck200/32/756_2.png) [@launch\_pad\_mcduck200](https://forum.arcdroidcnc.com/u/launch_pad_mcduck200)
#### Post date: [June 15, 2023, 9:40pm UTC](https://forum.arcdroidcnc.com/t/help-with-simple-trace-construction-lines/2988/4 "2023-06-15T21:40:26Z")

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This did indeed work much better. i think my error on the update had been the one crucial last step. . . hit the reset button because having on the thumb drive is not enough. i can make bolt hole patterns quite easily now.

What i continue to fight with today is getting round “enough” circles. so will make a post on RE-calibration question.