Need help to design this.

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Rburke1963
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Need help to design this.

Post by Rburke1963 » Mon Feb 09, 2015 12:13 pm

I am very new to 3D printing. Just recently finished my Rostock Max V2 assembly. Love this machine and technology. I am a Certified Prosthetist by trade and cant wait to implement 3d printing into my practice. The first project I would like to undertake is printing a cylinder 6" in diameter by 8" in height. Not sure how thick it needs to be but it can't be too flimsy. The cylinder is going to be used to prestretch a compression garment that is one of the first things applied after surgery which controls post surgical edema and helps with pain control. I have no CAD design experience so a simple project like this is very confusing to me at the present time. So I am asking for help to design this. If someone could send me the STL file for this it would be greatly appreciated and helping your fellow mankind at the same time. I have been modifying plastic trash buckets to perform this task presently. When I learn how to use CAD software to design I would eventually like to spruce up the cylinder with the letters COPA printed on the outside to represent my company name. Thanks in advance because I have seen how helpful people are here on the forum.
PS. Forgot to mention the cylinder is open ended both ends.
Last edited by Rburke1963 on Mon Feb 09, 2015 12:37 pm, edited 1 time in total.

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KAS
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Re: Need help to design this.

Post by KAS » Mon Feb 09, 2015 12:28 pm

Howdy, cylinders are my specialty and about the only thing I know how to make besides boxes... :)

I can create one tonight when I get home, unless someone beats me to it.

Rburke1963
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Re: Need help to design this.

Post by Rburke1963 » Mon Feb 09, 2015 12:38 pm

Thanks KAS! Really apreciate this.

Earthbound
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Re: Need help to design this.

Post by Earthbound » Mon Feb 09, 2015 2:20 pm

160mm OD, 4mm wall, 203mm tall.
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cylinder.stl
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KAS
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Re: Need help to design this.

Post by KAS » Mon Feb 09, 2015 3:26 pm

Beat me to it :) 4mm is pretty think and should take a beating. That should be a good size if you want to start writing letters on the side as-well.

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Jimustanguitar
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Re: Need help to design this.

Post by Jimustanguitar » Mon Feb 09, 2015 3:27 pm

Soapbox time again...

Check out DesignSpark Mechanical. It's a pretty full featured (free) CAD program with an easy learning curve. I drew and printed my first parts the same night.

http://www.rs-online.com/designspark/el ... mechanical

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KAS
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Re: Need help to design this.

Post by KAS » Mon Feb 09, 2015 4:38 pm

Soapbox? DesignSpark? you mean you're not pushing solidworks in some dark alley?



cylinder.png


This is more of a quick decorative one, but you get the idea.
cylinder.stl
(9.07 KiB) Downloaded 17 times

Rburke1963
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Re: Need help to design this.

Post by Rburke1963 » Mon Feb 09, 2015 4:59 pm

All of you guys are awesome! Thanks for pointing me in the right direction. Really appreciate it.

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nitewatchman
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Re: Need help to design this.

Post by nitewatchman » Mon Feb 09, 2015 7:12 pm

I also recommend Design Spark.

For this project just define two concentric circles, click on the space between and pull the cylinder to the height that you want. You can then export directly as an .stl file. Takes about that long.

And did I mention that it is free?

Design Spark likely collects information for the NSA and transmits it to them but I was on the list already.

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bvandiepenbos
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Re: Need help to design this.

Post by bvandiepenbos » Mon Feb 09, 2015 11:41 pm

Definitely give DSM a try. It is awesome.
Powerful, easy, and FRREEEE!
~*Brian V.

RostockMAX v2 (Stock)
MAX METAL "ShortyMAX"
MAX METAL Rostock MAX Printer Frame
NEMESIS Air Delta v1 & v2 -Aluminum delta printers
Rostock MAX "KITT" - Tri-Force Frame
GRABER i3 "Slim"

RegB
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Re: Need help to design this.

Post by RegB » Tue Feb 10, 2015 6:52 am

For the application outlined in the root post - would a truncated cone be more suitable ?
Those are easy enough to draw in most drawing tools and if you want to get fancy you can sketch it as a half section and do a rotate extrude.
Perhaps a bottle shape, e.g. this;
sleeve_stretcher.STL
(381.92 KiB) Downloaded 18 times


With reserved logo space.

Ooops, I thought I drew that to stand up, no matter just rotate it 90 degrees in X dimension :D

BTW, that is about a 10 hour print with MY current settings.
You will need GOOD bed leveling for 6 inch diameter and good first layer adhesion to bed.

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Eaglezsoar
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Re: Need help to design this.

Post by Eaglezsoar » Tue Feb 10, 2015 11:14 pm

I wish you the best when you print the cylinder and learning the cad software that was recommended.

RegB
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Re: Need help to design this.

Post by RegB » Wed Feb 11, 2015 2:35 pm

Something to think about as you try to slice a PIPE is how you want infill - whether or not you want any.
Almost any infill pattern between the inner and outer surfaces of this pipe will vary by position around the circle.

It may matter, or it may not.
In any case as an experiment, or as a learning opportunity, you may want to experiment with the slicer settings for minimum number of perimeters.
If you make it large enough there won't be any room for infill :D i.e. you will just stack sets of concentric circles.

BTW, I stumbled onto this when trying to make wheel spokes.
Some looked "good and strong" others not so much, depending on their direction.

Option B for me would be to buy schedule 40 PVC pipe, by the foot if necessary - about $10 per foot.
I could paint it, have business name engraved on it, etc for very little money.
Cartoon stickies for use in Children's ward, etc.
A 10 ft length would yield about 15 of the 8 inch lengths. :D

jlmccuan
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Re: Need help to design this.

Post by jlmccuan » Wed Apr 01, 2015 5:24 am

Sure wish there had been a machine to stretch my compression garment after my burn and graft surgeries! I was in compression from my jaw down to my waist, both arms and hands. It was such a fight to get them on I would be totally fatigued.

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Re: Need help to design this.

Post by RegB » Wed Aug 26, 2015 10:00 am

Design spark terms and conditions SEEM to require that I grant to RS some rights to whatever I design.
Not that my little designs are LIKELY to have commercial value, but every so often a patent-able part just MIGHT emerge from someone's gray matter in the wee small hours and it would be a shame to see it grabbed by RS for their profit, or given to the public domain by them.

Control Panel -> Programs and Features -> Design Spark Mechanical - Uninstall etc.

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Jimustanguitar
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Re: Need help to design this.

Post by Jimustanguitar » Wed Aug 26, 2015 11:38 am

3) Copyright

All RS Components trade marks, design rights, patents and other intellectual property rights on this website are vested in RS Components Limited or its licensors. Any products, technology or processes and their handbooks or materials may be subject to intellectual property rights owned or licensed by us or third parties. All copyright notices in the original materials must be retained.

You shall retain your rights in any content you submit, post or display on DesignSpark. You grant RS Components Limited a worldwide, non-exclusive, royalty free licence to use, copy, reproduce, process, modify, publish, transmit and display the content on any other RS site or for any other purposes. You confirm that you have all the necessary rights to grant RS Components Limited this licence.

RS Components Limited is not responsible for any file downloads. Materials downloaded from other users may be subject to restrictions and limitations as may be asserted by them.

This website may not modified, disassembled, decompiled or reverse engineered in any way. No part of DesignSpark may be reproduced or stored in any other website without our permission.

Certain applications on DesignSpark require you to licence source code using an open source model. Where this is the case it is your responsibility to understand and comply with the open source licensing model and it is your responsibility to choose the most appropriate open source licence type from the options made available to you. You understand that unless you choose an open source licence type for these applications, you will be unable to share content.




The "submit, post or display" part leads me to believe that they're only referring to things that you willingly upload or post on their forums. Kind of like "this call may be recorded for training purposes". I doubt very, very much that a company like this would try to take your intellectual property, you're thinking of ThingiVerse :)

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Jimustanguitar
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Re: Need help to design this.

Post by Jimustanguitar » Wed Aug 26, 2015 11:41 am

Several other lines in their license refer to the online community, quoting members, moderating, community rules, citing your sources, etc. Their license agreement is about the website.

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0110-m-p
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Re: Need help to design this.

Post by 0110-m-p » Wed Aug 26, 2015 11:48 am

More powerful and less user friendly but just as free as Designspark Mechanical is PTC Creo Elements/Direct Modeling Express 6.0 (I know...longest/least useful name ever). Only big negative is that it requires internet connection for license, but I like it more than DSM.

http://www.ptc.com/product/creo/element ... ng/express
Current Machines || Rostock Max (V1) | V3DR ||
Previous Machines || Flashforge Creator Pro ||

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