MUN MED 3D is the first 3D printing biomedical laboratory housed at the Health Science Centre in St. John’s, Newfoundland and Labrador, Canada. Its founders have some tips for how others can create their own.

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<html><head></head><body><h3 class="thing-component-header summary summary">Summary</h3>
<div><p>Halloween is just around the corner and we have the perfect 3D print for you! This spooky cross-axis bobble head is based on CMR&apos;s Cross-Axis Flexure Pivot. Two compliant flexures cross at their midpoint and are connected with rigid segments allow rotation.</p>
<p>To learn more about the original design go to: <a rel="nofollow" href="/thing:4635366">https://www.thingiverse.com/thing:4635366</a></p></div>
<h3 class="thing-component-header settings print-settings">Print Settings</h3>
<p class="detail-setting printer brand"><strong>Printer Brand: </strong>
                         </p><div><p>Prusa</p></div>
<p></p>                                    
                                                <p class="detail-setting printer"><strong>Printer: </strong>
                         </p><div><p><a rel="nofollow" href="http://amzn.to/2rqZ6Uo?tag=tv-auto-20" target="_blank">i3 MK3</a></p></div>
<p></p>                                    
                                                <p class="detail-setting rafts"><strong>Rafts: </strong>
                         </p><div><p>No</p></div>
<p></p>                                    
                                                <p class="detail-setting supports"><strong>Supports: </strong>
                         </p><div><p>No</p></div>
<p></p>                                    
                                                <p class="detail-setting resolution"><strong>Resolution: </strong>
                         </p><div><p>0.2</p></div>
<p></p>                                    
                                                <p class="detail-setting infill"><strong>Infill: </strong>
                         </p><div><p>20%</p></div>
<p></p>                                    
                    <strong>Filament:</strong> 
                    <a href="http://www.amazon.com/s?url=search-alias&amp;field-keywords=Prusa+PLA&amp;tag=tv-auto-20" target="_blank">
                        Prusa PLA                    </a>

                    Black
                
                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>
                        </p><div><p>This model is designed to print without the need for supports!</p></div>
<h3 class="thing-component-header custom assembly">Assembly</h3>
<div><p>Create your own spooky ghost by printing one of each stl file (one cross-axis and one ghost). Rotate the two pieces so the clips are on opposite ends and facing each other. Then simply clip the 3d prints together! See the images above.</p></div>
                    <p class="detail-image"><img src="https://cdn.thingiverse.com/assets/52/54/89/a0/a8/ezgif.com-gif-maker.gif"></p>
</body></html>

Ghost Cross-Axis

Halloween is just around the corner and we have the perfect 3D print for you! This spooky cross-axis bobble head is based on CMR's Cross-Axis Flexure Pivot. Two compliant flexures cross at their midpoint and are connected with rigid segments allow rotation.

To learn more about the original design go to: https://www.thingiverse.com/thing:4635366


<html><head></head><body><h3 class="thing-component-header summary summary">Summary</h3>
<div><p>It&apos;s time that Halloween decorations involve engineering! The Flex-Bat is based on CMR&apos;s Flex-16 hinge (link below). The flexibility of the compliant hinge allows the wings to be flapped without pins and links. Perfect for Halloween decorations while learning about compliant mechanisms. </p>
<p>Learn more about the original design.<br>
CMR Flex-16 <a rel="nofollow" href="/thing:3524459">https://www.thingiverse.com/thing:3524459</a></p></div>
<h3 class="thing-component-header settings print-settings">Print Settings</h3>
<p class="detail-setting printer brand"><strong>Printer Brand: </strong>
                         </p><div><p>Creality</p></div>
<p></p>                                    
                                                <p class="detail-setting printer"><strong>Printer: </strong>
                         </p><div><p>Ender 3</p></div>
<p></p>                                    
                                                <p class="detail-setting rafts"><strong>Rafts: </strong>
                         </p><div><p>No</p></div>
<p></p>                                    
                                                <p class="detail-setting supports"><strong>Supports: </strong>
                         </p><div><p>Doesn&apos;t Matter</p></div>
<p></p>                                    
                                                <p class="detail-setting resolution"><strong>Resolution: </strong>
                         </p><div><p>0.2</p></div>
<p></p>                                    
                                                <p class="detail-setting infill"><strong>Infill: </strong>
                         </p><div><p>25%</p></div>
<p></p>                                    
                    <strong>Filament:</strong> 
                    <a href="http://www.amazon.com/s?url=search-alias&amp;field-keywords=creality++PLA&amp;tag=tv-auto-20" target="_blank">
                        creality  PLA                    </a>

                    Black
</body></html>

Bat-Flex

It's time that Halloween decorations involve engineering! The Flex-Bat is based on CMR's Flex-16 hinge (link below). The flexibility of the compliant hinge allows the wings to be flapped without pins and links. Perfect for Halloween decorations while learning about compliant mechanisms. 

Learn more about the original design. 
CMR Flex-16 https://www.thingiverse.com/thing:3524459

<html><head></head><body><h3 class="thing-component-header summary summary">Summary</h3>
<div><p>Cross-axis flexure pivots are created by crossing flexures and connecting them with rigid segments at their ends, allowing the opposite ends to rotate relative to each other. Cross-axis flexure pivots can replace pin joints in applications where wear and/or friction need to be low or eliminated.</p></div>
<h3 class="thing-component-header settings print-settings">Print Settings</h3>
<p class="detail-setting printer brand"><strong>Printer Brand: </strong>
                         </p><div><p>Prusa</p></div>
<p></p>                                    
                                                <p class="detail-setting printer"><strong>Printer: </strong>
                         </p><div><p><a rel="nofollow" href="http://amzn.to/2rqZ6Uo?tag=tv-auto-20" target="_blank">i3 MK3</a></p></div>
<p></p>                                    
                                                <p class="detail-setting rafts"><strong>Rafts: </strong>
                         </p><div><p>No</p></div>
<p></p>                                    
                                                <p class="detail-setting supports"><strong>Supports: </strong>
                         </p><div><p>No</p></div>
<p></p>                                    
                                                <p class="detail-setting resolution"><strong>Resolution: </strong>
                         </p><div><p>0.2</p></div>
<p></p>                                    
                                                <p class="detail-setting infill"><strong>Infill: </strong>
                         </p><div><p>20%</p></div>
<p></p>                                    
                    <strong>Filament:</strong> 
                    <a href="http://www.amazon.com/s?url=search-alias&amp;field-keywords=Prusa+PLA&amp;tag=tv-auto-20" target="_blank">
                        Prusa PLA                    </a>

                    Black
                
                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>
                        </p><div><p>This model is designed to print without supports.</p></div>
<h3 class="thing-component-header custom assembly">Assembly</h3>
<div><p>Create your own cross axis flexure pivot by printing two Cross Axis parts, rotating them so the clips are on opposite ends and facing each other, then clipping the two parts together (see the images above). The two pieces should fit secure with the studs in each corresponding hole and the clips in place.</p></div>
<h3 class="thing-component-header custom application">Application</h3>
<p class="detail-image"><img src="https://cdn.thingiverse.com/assets/5d/da/4d/8c/dd/1-s2.0-S0141635916302690-gr1_lrg.jpg"></p>
                    <div><p>A version of the cross-axis flexure pivot, the Cylindrical Cross-Axis Flexure Pivot (CCAFP), has been proposed as an ultra-compact flexure capable of being integrated into mechanisms used for minimally invasive surgeries. This CCAFP would create a flexible, hollow wrist at the end of surgical instruments that allows for cables and other components to pass through the inside of the shaft. Potentially, this could decrease the instrument&#x2019;s size while maintaining the instrument&#x2019;s performance.</p></div>
                <p class="detail-image"><img src="https://cdn.thingiverse.com/assets/02/cc/60/e8/d0/1-s2.0-S0141635916302690-gr7_lrg.jpg"></p>
                    <p class="detail-image"><img src="https://cdn.thingiverse.com/assets/91/4b/b3/ad/59/1-s2.0-S0141635916302690-gr23_lrg.jpg"></p>
                    <p class="detail-image"><img src="https://cdn.thingiverse.com/assets/a4/c7/4b/38/81/1-s2.0-S0141635916302690-gr16_lrg.jpg"></p>
                    <div><p>This cross-axis flexure pivot could also benefit any other application that would require compact and non-intrusive motion components.</p></div>
                <div><p>A two-degree-of-freedom joint can be created by stacking two cross-axis flexure pivots with their axes of rotation orthogonal to each other.</p></div>
<h3 class="thing-component-header custom learn-more">Learn More</h3>
<p class="detail-title"><strong>Other Applications</strong></p>
                <div><p>The BYU CMR group has used this cross-axis flexure in multiple other mechanisms including the following...</p></div>
                <div><p><a rel="nofollow" href="/thing:3612786">https://www.thingiverse.com/thing:3612786</a></p></div>
                <div><p><a rel="nofollow" href="/thing:2987817">https://www.thingiverse.com/thing:2987817</a></p></div>
                <p class="detail-title"><strong>Technical Papers</strong></p>
                <div><p>Dearden, J., Grames, C., Orr, J., Jensen, B. D., Magleby, S. P., &amp; Howell, L. L. (2018). Cylindrical cross-axis flexural pivots. Precision Engineering, 51, 604-613. doi:10.1016/j.precisioneng.2017.11.001<br><a rel="nofollow" href="https://www.sciencedirect.com/science/article/pii/S0141635916302690">https://www.sciencedirect.com/science/article/pii/S0141635916302690</a> </p></div>
                <div><p>Jensen, B. D., &amp; Howell, L. L. (2002). The modeling of cross-axis flexural pivots. Mechanism and Machine Theory, 37(5), 461-476. doi:10.1016/S0094-114X(02)00007-1<br><a rel="nofollow" href="https://www.sciencedirect.com/science/article/pii/S0094114X02000071">https://www.sciencedirect.com/science/article/pii/S0094114X02000071</a> </p></div>
                <div><p>Bilancia, P., Berselli, G., Magleby, S., &amp; Howell, L. (2020). On the modeling of a contact-aided cross-axis flexural pivot. Mechanism and Machine Theory, 143 doi:10.1016/j.mechmachtheory.2019.103618<br><a rel="nofollow" href="https://www.sciencedirect.com/science/article/pii/S0094114X19316921?via%3Dihub">https://www.sciencedirect.com/science/article/pii/S0094114X19316921?via%3Dihub</a> </p></div>
</body></html>

Cross-Axis Flexure Pivot

Cross-axis flexure pivots are created by crossing flexures and connecting them with rigid segments at their ends, allowing the opposite ends to rotate relative to each other. Cross-axis flexure pivots can replace pin joints in applications where wear and/or friction need to be low or eliminated.


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