# Shapr files for purchase

**URL:** <https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188>\
**Category:** Modeling Questions\
**Created:** [October 4, 2021, 4:16pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188 "2021-10-04T16:16:20Z")\
**Posts on this page:** 11\
**Page:** 1

<div class="post-metadata">

**Author:** ![SgtBilko](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@SgtBilko](https://discourse.shapr3d.com/u/SgtBilko)\
**Post date:** [October 4, 2021, 4:16pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/1 "2021-10-04T16:16:20Z")

</div>

I am using Shapr3D for a particular project (astronomy / 3D printing related) and I am content to learn the basics (plus a bit) to design the parts I need but when it comes to designing a spur gear and rack gear to fit I think the learning curve is a “bridge too far”. I have downloaded an stl rack gear from turbosquid only to discover I cant edit it (My fault).

I don’t expect this stuff for free and it needs to be a good quality / reliable model; is there a place to purchase good quality shapr models / files ?

Thank you

---

<div class="post-metadata">

**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [October 4, 2021, 4:37pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/2 "2021-10-04T16:37:19Z")

</div>

Don’t bother with STL files. Go to McMaster for free 3D files of all sorts of gears and racks. Download the STEP files and import into Shapr3D.

> **[McMaster-Carr](https://www.mcmaster.com/spur-gears/)**
>
> McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

---

<div class="post-metadata">

**Author:** ![SgtBilko](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@SgtBilko](https://discourse.shapr3d.com/u/SgtBilko)\
**Post date:** [October 4, 2021, 5:04pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/3 "2021-10-04T17:04:18Z")

</div>

Mike

That is excellent advice, I can’t thank you enough, but here goes…….Thank you very much.

Ian

---

<div class="post-metadata">

**Author:** ![SgtBilko](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@SgtBilko](https://discourse.shapr3d.com/u/SgtBilko)\
**Post date:** [October 4, 2021, 5:17pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/4 "2021-10-04T17:17:51Z")

</div>

Mike

Do you know if it is possible to edit STEP files, for example I want to change the width of a gear which is in all other respects perfect.

Thank you

---

<div class="post-metadata">

**Author:** ![SgtBilko](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@SgtBilko](https://discourse.shapr3d.com/u/SgtBilko)\
**Post date:** [October 4, 2021, 5:24pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/5 "2021-10-04T17:24:40Z")

</div>

Answer…… yes you can

---

<div class="post-metadata">

**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [October 4, 2021, 5:24pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/6 "2021-10-04T17:24:50Z")

</div>

You’re welcome. Yes, you can edit those downloaded gears any way you want to. I do it all the time. I have a couple of std FDM 3D printers with 0.4mm nozzles and am able to print 32 pitch gears reasonably well for my use in prototyping. I prefer printing 24 pitch or larger. I print in either PETG or Pro-PLA. For gears, I also shave off a fraction of the tooth profile to get better performance results due to the nature 3D printed parts.

---

<div class="post-metadata">

**Author:** ![McD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mcd/32/15504_2.png) [@McD](https://discourse.shapr3d.com/u/McD)\
**Post date:** [October 4, 2021, 5:30pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/7 "2021-10-04T17:30:59Z")

</div>

Yes, I edit the step files from McMaster Carr all the time.

---

<div class="post-metadata">

**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [October 4, 2021, 5:32pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/8 "2021-10-04T17:32:56Z")

</div>

@SgtBilko, here’s an example of one of my latest projects.

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/5e76a792a39828e5ca46b5faff9043910cb47f40.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/5e76a792a39828e5ca46b5faff9043910cb47f40.MOV)

---

<div class="post-metadata">

**Author:** ![McD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mcd/32/15504_2.png) [@McD](https://discourse.shapr3d.com/u/McD)\
**Post date:** [October 4, 2021, 5:52pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/9 "2021-10-04T17:52:51Z")

</div>

Cool Mike. Maybe one day we’ll have Kinematics in Shapr3D!

---

<div class="post-metadata">

**Author:** ![Stephen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/stephen/32/16350_2.png) [@Stephen](https://discourse.shapr3d.com/u/Stephen)\
**Post date:** [September 15, 2022, 3:22pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/10 "2022-09-15T15:22:17Z")

</div>

Good work Mike.

---

<div class="post-metadata">

**Author:** ![Yepher](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/yepher/32/8902_2.png) [@Yepher](https://discourse.shapr3d.com/u/Yepher)\
**Post date:** [September 15, 2022, 3:53pm UTC](https://discourse.shapr3d.com/t/shapr-files-for-purchase/15188/11 "2022-09-15T15:53:14Z")

</div>

Pulling .STEP files is a great suggestion.

One other technique I use is to use one of the many gear generators like [Free Gear Generator - Design & Create Spur Gears – Evolvent Design](https://evolventdesign.com/pages/spur-gear-generator) that will output a DXF. From that, you can extrude it however you like. For some gears, this would still be hard to get to what you need S3D, but for flat gears, it works well and gives you a lot of flexibility for the design of the gear.

I have an STL to DXF generator that I am hoping to launch a free web page for in the near future to do exactly what you were trying to do originally.

(Edit)

Ooops, just realized this in an old thread 🙂