Showing posts with label MOI. Show all posts
Showing posts with label MOI. Show all posts

Sunday, November 30, 2014

Cube 3: A Stategy for Easier Printed Part Removal

Jim Ward, in a comment on an earlier blog post pointed out that using a raft might make it easier to remove printed items.  And, he is right.  The crisscross construction of rafts allows for water to penetrate under the piece which dissolves the water soluble CubeStick, making it easier to lift the piece off the print plate.

But, then we are faced with the challenge of removing the raft from the item.  And, I have had very little success cleaning the raft off an item completely.

In line with Jim's basic premise, that allowing water to dissolve some of the glue under a piece would facilitate removal, I've been using channels cut into the bottom of items to accomplish the same thing.

While he didn't mention it, the second benefit of Jim's observation is that having a raft makes it easier for us to get the palette knife under the item we are trying to remove.  To accomplish this without a raft, we can chamfer the bottom edges to give us leverage for a palette knife to pry the item off the plate.

Both systems work.  It's just a matter of preference as to which one you use in your own designs.  But, when printing downloaded designs, Jim's suggestion of using a raft is the best alternative.

In Moment of Inspiration, the process of creating channels is very easy.  Here is a short video that demonstrates an alternative to using a raft to facilitate easier removal. 


The ease with which these kinds of operations are done in Moment of Inspiration is just one of the reasons why we chose it for our cadets as they learn to design and print in 3D.

Monday, December 24, 2012

Christmas Eve Gift - Thread Cutting Tool

Before I left the house this morning, to visit my grandchildren, I finally created that long promised thread cutting tool tutorial for Moment of Inspiration.  And, before retiring this evening, I edited the video and posted it on YouTube.



I have NO idea why it took me so long to get it done because it is a piece of cake to do in Moment of Inspiration!  Maybe I was just waiting for a grand occasion, like Christmas Eve to release it.  Whatever the reason for the delay, I hope that the second part of the tutorial on designing bolts and threads in Moment of Inspiration will come a LOT faster.

Have a GREAT holiday/  And, for those of you that will be fortunate enough to have received a Cube 3D printer for Christmas, I want to welcome you aboard and hope that you will find these pages helpful to you.  This is going to be the start of a wonderfully creative adventure!

Wednesday, October 24, 2012

Invent Intro #04 - Circles (Extrusion Boss & Cut)

Extrusion is one of the most used commands in any CAD program.  And, Cubify Invent is no exception.  It is THE primary way that we turn a 2D sketch into a 3D object. 

There are two types of EXTRUDE that can be used in Cubify Invent.  They are EXTRUDE (Boss) and EXTRUDE (Cut).

EXTRUDE (BOSS)

Essentially, EXTRUDE (Boss) ADDS layers of material in the shape of the 2D sketch to form a 3D object with features defined by the 2D sketch.  I don't think that it's a stretch to call EXTRUDE (Boss) the most used 2D to 3D option.

Using EXTRUDE (Boss), a 2D circle becomes a 3D Cylinder having height as well as a circumference.  A 2D square becomes a 3D box or cube when EXTRUDE (Boss) is applied.

EXTRUDE (CUT)

EXTRUDE (Cut) doesn't ADD material.  It REMOVES material, if any exists.  This is most often used to create cut-outs and holes in already existing 3D objects.  While not used as often as its boss counterpart, it is still an often used option and may well be second of all the 3D options in frequency of use.

Using the selected 2D sketch, it acts as a cutting die, removing the exact shape of the original 2D sketch from whatever 3D object is crosses.  It can cut partially through an object or all the way through as the user determines.

Here is a video that demonstrates these powerful Cubify Invent commands at work creating a useful part that has bolt holes and a ledge that is counter-sunk into the part using EXTRUDE (Cut).




For those exploring Moment of Inspiration, here is how a similar part might be created using only EXTRUDE (boss) with MOI's Boolean Union and Difference Tools.  It's interesting how different applications accomplish the same task by going down two different paths. 



In a follow-up tutorial, we explore all the 2D and 3D BOOLEAN FUNCTIONS available in Moment of Inspiration.



Monday, May 28, 2012

Creating a Handle with Insert in Moment of Inspiration

Most of the items I will be uploading to the Cubify store have more than one purpose.  Of course, the primary purpose is to offer a useful item for Cube owners to download.  But, a very important secondary purpose is to provide an opportunity to introduce applications and techniques that are useful for those Cube owners that want to create their own objects.

The Nail Holder is no exception.  It is very useful to learn how a handle with a matching insert can be designed.  Well fitted inserts are going to be an important part of our design toolbox.

In this case, I've created a video that demonstrates the principles and techniques that were used to create the Nail Holder handle with the matching pentagonal insert.  I hope you find it useful.


Of course, other CAD and 3D applications can perform similarly.  So, we won't always just demonstrate using Moment of Inspiration.  There will be opportunities to introduce 3D programs for students, like TinkerCAD and Open Source 3D applications like Art of Illusion.

But, I have to tell you.  When it comes to easy and productive, I find Moment of Inspiration truly amazing.

Using Moment of Inspiration to Create the Counter-Rotating Stars

I thought it might be fun to show you how I created the counter-rotating stars in the test STL that I introduced earlier.

My primary 3D application is called "Moment of Inspiration".  It can be found at MOI3D.com.

I have long searched for a program that was simple enough for me to use; yet, powerful enough to do something useful.  I needed something that was a cross between a traditional CAD program and an organic 3D application.  I found what I was looking for in MOI 3D.

I think you will be pleasantly surprised at how easy it is to form the counter-rotating star objects.

Now, between 1969 and the early 1980's I was in the business of creating well-scripted professional videos with slick sound tracks.  It would be hard to prove that to a person that sees one of my current video tutorials.

I could try to pass it off as a deliberate "Stream of Consciousness" technique.  But, I'm not sure that would fly.  It's closer to "Stream of Unconsciousness"!!!

But, I hope that the videos are useful even with my struggling to find the right words!  At least it's BOUND to be more entertaining!

What can I say?  I'm old.    LOL!!

For better or worse, here's how I did it using Moment of Inspiration.


Pretty slick, isn't it?

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