# papacad\.com: Ready\-to\-Build CAD Projects with 3D Models, Drawings \& Files for Engineers

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## Pages
- [About Papacad\.com](https://www.papacad.com/about-cad-engineering-projects-download/)
- [Ready\-to\-Build CAD Projects for Workshop Fabrication](https://www.papacad.com/ready-to-build-cad-projects/)
- [How scissor lift works](https://www.papacad.com/how-scissor-lift-works/)
- [Foldable Workshop Crane Design – Calculations, Forces and Real Engineering Approach](https://www.papacad.com/foldable-workshop-crane-design-calculations-forces-and-real-engineering-approach/)
- [Welding Positioner Torque Calculation – Engineering Guide](https://www.papacad.com/welding-positioner-torque-calculation-engineering-guide/)
- [Scissor Lift Force Calculation – Engineering Approach](https://www.papacad.com/scissor-lift-force-calculation-full-engineering-approach/)
- [How a Welding Positioner Works](https://www.papacad.com/how-a-welding-positioner-works/)
- [How a Gantry Crane Works](https://www.papacad.com/how-gantry-crane-works/)
- [Engineering Guides](https://www.papacad.com/engineering-guides/)
- [Conveyor Belt Design – Speed, Capacity and Motor Power Calculation](https://www.papacad.com/conveyor-belt-design-speed-capacity-and-motor-power-calculation/)

## Products
- [DIY 2‑Ton Gantry Crane CAD Plans – 5\.5 m Span \& Height \| 3D \+ 2D](https://www.papacad.com/shop/gantry-crane-2-tons-complete-cad-project/): \<div class="pricing\-grid package\-grid"\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-manufacturing\-pack" aria\-pressed="false"\>
\<h4\>2D Manufacturing Pack\</h4\>
Ready for workshop production
\<ul\>
 	\<li\>2D DWG drawings\</li\>
 	\<li\>2D PDF prints\</li\>
 	\<li\>Production\-ready dimensions\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box best" tabindex="0" role="button" data\-value="full\-pro\-pack" aria\-pressed="false"\>
\<h4\>Full Pro Pack\</h4\>
Complete engineering package
\<ul\>
 	\<li\>3D \+ 2D full documentation\</li\>
 	\<li\>All formats included\</li\>
 	\<li\>Ready for production and modification\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\</div\>
- [Adjustable Height Coffee Table CAD Plans – Screw‑Driven Scissor Design](https://www.papacad.com/shop/coffe-table-design/): \<div class="pricing\-grid package\-grid"\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-basic\-diy\-pack" aria\-pressed="false"\>
\<h4\>2D Basic DIY Pack\</h4\>
For quick DIY reference
\<ul\>
 	\<li\>2D PDF drawings\</li\>
 	\<li\>Printable workshop set\</li\>
 	\<li\>Fast and simple use\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-manufacturing\-pack" aria\-pressed="false"\>
\<h4\>2D Manufacturing Pack\</h4\>
Ready for workshop production
\<ul\>
 	\<li\>2D DWG drawings\</li\>
 	\<li\>2D PDF prints\</li\>
 	\<li\>Production\-ready dimensions\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="3d\-neutral\-pack" aria\-pressed="false"\>
\<h4\>3D Neutral Pack\</h4\>
Universal CAD compatibility
\<ul\>
 	\<li\>STEP / STL / DWF\</li\>
 	\<li\>Import into any CAD system\</li\>
 	\<li\>No native CAD required\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box popular" tabindex="0" role="button" data\-value="3d\-engineering\-pack" aria\-pressed="false"\>
\<h4\>3D Engineering Pack\</h4\>
Best for CAD modifications
\<ul\>
 	\<li\>Inventor 3D assembly\</li\>
 	\<li\>STEP / STL / DWF\</li\>
 	\<li\>Full editability\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box best" tabindex="0" role="button" data\-value="full\-pro\-pack" aria\-pressed="false"\>
\<h4\>Full Pro Pack\</h4\>
Complete engineering package
\<ul\>
 	\<li\>3D \+ 2D full documentation\</li\>
 	\<li\>All formats included\</li\>
 	\<li\>Ready for production and modification\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\</div\>
- [Welding Positioner Design – 360° Rotary Fixture CAD Plans](https://www.papacad.com/shop/rotary-welding-fixture-inventor-cad/): \<div class="pricing\-grid package\-grid"\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-basic\-diy\-pack" aria\-pressed="false"\>
\<h4\>2D Basic DIY Pack\</h4\>
For quick DIY reference
\<ul\>
 	\<li\>2D PDF drawings\</li\>
 	\<li\>Printable workshop set\</li\>
 	\<li\>Fast and simple use\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-manufacturing\-pack" aria\-pressed="false"\>
\<h4\>2D Manufacturing Pack\</h4\>
Ready for workshop production
\<ul\>
 	\<li\>2D DWG drawings\</li\>
 	\<li\>2D PDF prints\</li\>
 	\<li\>Production\-ready dimensions\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="3d\-neutral\-pack" aria\-pressed="false"\>
\<h4\>3D Neutral Pack\</h4\>
Universal CAD compatibility
\<ul\>
 	\<li\>STEP / STL / DWF\</li\>
 	\<li\>Import into any CAD system\</li\>
 	\<li\>No native CAD required\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box popular" tabindex="0" role="button" data\-value="3d\-engineering\-pack" aria\-pressed="false"\>
\<h4\>3D Engineering Pack\</h4\>
Best for CAD modifications
\<ul\>
 	\<li\>Inventor 3D assembly\</li\>
 	\<li\>STEP / STL / DWF\</li\>
 	\<li\>Full editability\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box best" tabindex="0" role="button" data\-value="full\-pro\-pack" aria\-pressed="false"\>
\<h4\>Full Pro Pack\</h4\>
Complete engineering package
\<ul\>
 	\<li\>3D \+ 2D full documentation\</li\>
 	\<li\>All formats included\</li\>
 	\<li\>Ready for production and modification\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\</div\>
- [2 ton DIY Foldable Hydraulic Crane CAD Plans – 3D \+ 2D Workshop Design](https://www.papacad.com/shop/foldable-hydraulic-crane-cad-plans/): \<div class="pricing\-grid package\-grid"\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-basic\-diy\-pack" aria\-pressed="false"\>
\<h4\>2D Basic DIY Pack\</h4\>
For quick DIY reference
\<ul\>
 	\<li\>2D PDF drawings\</li\>
 	\<li\>Printable workshop set\</li\>
 	\<li\>Fast and simple use\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="2d\-manufacturing\-pack" aria\-pressed="false"\>
\<h4\>2D Manufacturing Pack\</h4\>
Ready for workshop production
\<ul\>
 	\<li\>2D DWG drawings\</li\>
 	\<li\>2D PDF prints\</li\>
 	\<li\>Production\-ready dimensions\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="3d\-neutral\-pack" aria\-pressed="false"\>
\<h4\>3D Neutral Pack\</h4\>
Universal CAD compatibility
\<ul\>
 	\<li\>STEP / STL / DWF\</li\>
 	\<li\>Import into any CAD system\</li\>
 	\<li\>No native CAD required\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box popular" tabindex="0" role="button" data\-value="3d\-engineering\-pack" aria\-pressed="false"\>
\<h4\>3D Engineering Pack\</h4\>
Best for CAD modifications
\<ul\>
 	\<li\>Inventor 3D assembly\</li\>
 	\<li\>STEP / STL / DWF\</li\>
 	\<li\>Full editability\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box best" tabindex="0" role="button" data\-value="full\-pro\-pack" aria\-pressed="false"\>
\<h4\>Full Pro Pack\</h4\>
Complete engineering package
\<ul\>
 	\<li\>3D \+ 2D full documentation\</li\>
 	\<li\>All formats included\</li\>
 	\<li\>Ready for production and modification\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="engineering\-calculations\-xls\_ods" aria\-pressed="false"\>
\<h4\>Engineering Calculations Pack\</h4\>
\<p class="microcopy"\>Built\-in formulas for fast engineering checks\</p\>

\<ul\>
 	\<li\>XLS \+ ODS calculation files\</li\>
 	\<li\>Built\-in formulas for custom input data\</li\>
 	\<li\>Hydraulic force and cylinder stroke\</li\>
 	\<li\>Support for engineering checks and sizing\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\</div\>
- [60 Ton Hydraulic Press CAD Plans – 3D \+ 2D Inventor](https://www.papacad.com/shop/60-ton-heated-platen-hydraulic-press-plans-cad-3d-2d/): \<div class="pricing\-grid package\-grid"\>
\<div class="plan package\-box best" tabindex="0" role="button" data\-value="3d\-engineering\-pack" aria\-pressed="false"\>
\<h4\>3D Engineering Pack\</h4\>
Best for 3D modification
\<span class="package\-details\-toggle" tabindex="0" role="button" aria\-expanded="false"\>Show more details\</span\>
\<ul class="package\-details\-list"\>
 	\<li\>3D \+ 2D full documentation\</li\>
 	\<li\>All formats included\</li\>
 	\<li\>Ready for production and modification\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\<div class="plan package\-box" tabindex="0" role="button" data\-value="3d\-neutral\-pack" aria\-pressed="false"\>
\<h4\>3D Neutral Pack\</h4\>
Universal CAD compatibility
\<span class="package\-details\-toggle" tabindex="0" role="button" aria\-expanded="false"\>Show more details\</span\>
\<ul class="package\-details\-list"\>
 	\<li\>STEP / STL / DWF\</li\</li\>
 	\<li\>Import into any CAD system\</li\>
 	\<li\>No native CAD required\</li\>
 	\<li\>Engineering support files\</li\>
\</ul\>
\<div class="price"\>\</div\>
\<button class="package\-cta" type="button"\>Add this package\</button\>

\</div\>
\</div\>

## Categories
- [Blog](https://www.papacad.com/blog-engineering-design-services/)

## Product categories
- [Shop \- 3D \& 2D CAD Projects for Download](https://www.papacad.com/product-category/3d-inventor-projects/)
- [Workshop Equipment](https://www.papacad.com/product-category/workshop-equipment-cad-plans/)
- [Special Engineering Projects](https://www.papacad.com/product-category/special-engineering-projects/)
- [Lifting, Handling \& Transport](https://www.papacad.com/product-category/crane-cad-plans/)
- [Free CAD Projects](https://www.papacad.com/product-category/free-cad-projects/)

## Product \>
- [Full PRO Pack](https://www.papacad.com/select-cad-documentation/full-pro-pack/)
- [3D Neutral Pack](https://www.papacad.com/select-cad-documentation/3d-neutral-pack/)
- [3D Engineering Pack](https://www.papacad.com/select-cad-documentation/3d-engineering-pack/)
- [2D Manufacturing Pack](https://www.papacad.com/select-cad-documentation/2d-manufacturing-pack/)
- [2D Basic DIY Pack](https://www.papacad.com/select-cad-documentation/2d-basic-diy-pack/)

## Optional
- [Sitemap index](https://www.papacad.com/sitemap_index.xml)