Empathy List Archives

D

dbvanhorn

Sat, Sep 3, 2016 11:39 AM

I am almost done with a mount for my projector which unfortunately does not
have a 1/4-20 receptacle. I like what I have so far, which is a flat plate
with recess for the nut, a "dish" for the projector and cutouts for the
optics and controls/cables.

However, I would need to use rubber bands to secure the projector, and that
just feels like a kludge.

I would prefer some sort of latch/clip feature where it would "click" in and
hold the projector and allow me to release the projector by pressing
sideways on the clip.

What I'm thinking of would involve printing an overhang, but maybe there's a
better way.
I'm not even sure what this feature is called. Second pic on this page
gives the general idea.
http://www.redheadbabymama.com/2012/04/review-in-babyproofing-safety-1st.html

I want something I can print in one piece with the main body if that's
possible.

Ideas?

--
View this message in context: http://forum.openscad.org/Clips-latches-spring-clips-tp18315.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

I am almost done with a mount for my projector which unfortunately does not have a 1/4-20 receptacle. I like what I have so far, which is a flat plate with recess for the nut, a "dish" for the projector and cutouts for the optics and controls/cables. However, I would need to use rubber bands to secure the projector, and that just feels like a kludge. I would prefer some sort of latch/clip feature where it would "click" in and hold the projector and allow me to release the projector by pressing sideways on the clip. What I'm thinking of would involve printing an overhang, but maybe there's a better way. I'm not even sure what this feature is called. Second pic on this page gives the general idea. http://www.redheadbabymama.com/2012/04/review-in-babyproofing-safety-1st.html I want something I can print in one piece with the main body if that's possible. Ideas? -- View this message in context: http://forum.openscad.org/Clips-latches-spring-clips-tp18315.html Sent from the OpenSCAD mailing list archive at Nabble.com.

J

jon

Sat, Sep 3, 2016 12:03 PM

Printing overhangs is not a big deal. You can either ask the slicing
software to provide the support, or you can include break-away support
as part of your design. I do that routinely. Start off trying an 0.5 mm
wall or box. They seem to break away easily.

Jon

On 9/3/2016 7:39 AM, dbvanhorn wrote:

I am almost done with a mount for my projector which unfortunately does not
have a 1/4-20 receptacle. I like what I have so far, which is a flat plate
with recess for the nut, a "dish" for the projector and cutouts for the
optics and controls/cables.

However, I would need to use rubber bands to secure the projector, and that
just feels like a kludge.

I would prefer some sort of latch/clip feature where it would "click" in and
hold the projector and allow me to release the projector by pressing
sideways on the clip.

What I'm thinking of would involve printing an overhang, but maybe there's a
better way.
I'm not even sure what this feature is called. Second pic on this page
gives the general idea.
http://www.redheadbabymama.com/2012/04/review-in-babyproofing-safety-1st.html

I want something I can print in one piece with the main body if that's
possible.

Ideas?

Printing overhangs is not a big deal. You can either ask the slicing software to provide the support, or you can include break-away support as part of your design. I do that routinely. Start off trying an 0.5 mm wall or box. They seem to break away easily. Jon On 9/3/2016 7:39 AM, dbvanhorn wrote: > I am almost done with a mount for my projector which unfortunately does not > have a 1/4-20 receptacle. I like what I have so far, which is a flat plate > with recess for the nut, a "dish" for the projector and cutouts for the > optics and controls/cables. > > However, I would need to use rubber bands to secure the projector, and that > just feels like a kludge. > > I would prefer some sort of latch/clip feature where it would "click" in and > hold the projector and allow me to release the projector by pressing > sideways on the clip. > > What I'm thinking of would involve printing an overhang, but maybe there's a > better way. > I'm not even sure what this feature is called. Second pic on this page > gives the general idea. > http://www.redheadbabymama.com/2012/04/review-in-babyproofing-safety-1st.html > > I want something I can print in one piece with the main body if that's > possible. > > Ideas? >

KS

Kenneth Sloan

Sat, Sep 3, 2016 1:38 PM

Overhang is not an issue.

The real issue is the material used to print the part. I have done many projects over the past 5 years that involved this sort of “click fit”. I was running a 3D Print Lab which provided service - and also trained students. Of course, I also had many “personal” projects - and a major theme was constructing this kind of snap-together constructions.

We were purely an ABS shop - and ABS proved to be relatively unforgiving under multiple “snap-on/snap-off” cycles.
If you make it too thick, it won’t bend. If you make it too thin, it will crack.

For your application, my first though is to consider a “twist-on” connection (like, say an SLR bayonet mount, or a pickle-jar lid.

On Sep 3, 2016, at 07:03, jon jon@jonbondy.com wrote:

Printing overhangs is not a big deal. You can either ask the slicing software to provide the support, or you can include break-away support as part of your design. I do that routinely. Start off trying an 0.5 mm wall or box. They seem to break away easily.

Jon

On 9/3/2016 7:39 AM, dbvanhorn wrote:

I am almost done with a mount for my projector which unfortunately does not
have a 1/4-20 receptacle. I like what I have so far, which is a flat plate
with recess for the nut, a "dish" for the projector and cutouts for the
optics and controls/cables.

However, I would need to use rubber bands to secure the projector, and that
just feels like a kludge.

I would prefer some sort of latch/clip feature where it would "click" in and
hold the projector and allow me to release the projector by pressing
sideways on the clip.

What I'm thinking of would involve printing an overhang, but maybe there's a
better way.
I'm not even sure what this feature is called. Second pic on this page
gives the general idea.
http://www.redheadbabymama.com/2012/04/review-in-babyproofing-safety-1st.html

I want something I can print in one piece with the main body if that's
possible.

Ideas?

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

—
Kenneth Sloan
kennethrsloan@gmail.com

Overhang is not an issue. The real issue is the material used to print the part. I have done many projects over the past 5 years that involved this sort of “click fit”. I was running a 3D Print Lab which provided service - and also trained students. Of course, I also had many “personal” projects - and a major theme was constructing this kind of snap-together constructions. We were purely an ABS shop - and ABS proved to be relatively unforgiving under multiple “snap-on/snap-off” cycles. If you make it too thick, it won’t bend. If you make it too thin, it will crack. For your application, my first though is to consider a “twist-on” connection (like, say an SLR bayonet mount, or a pickle-jar lid. > On Sep 3, 2016, at 07:03, jon <jon@jonbondy.com> wrote: > > Printing overhangs is not a big deal. You can either ask the slicing software to provide the support, or you can include break-away support as part of your design. I do that routinely. Start off trying an 0.5 mm wall or box. They seem to break away easily. > > Jon > > > On 9/3/2016 7:39 AM, dbvanhorn wrote: >> I am almost done with a mount for my projector which unfortunately does not >> have a 1/4-20 receptacle. I like what I have so far, which is a flat plate >> with recess for the nut, a "dish" for the projector and cutouts for the >> optics and controls/cables. >> >> However, I would need to use rubber bands to secure the projector, and that >> just feels like a kludge. >> >> I would prefer some sort of latch/clip feature where it would "click" in and >> hold the projector and allow me to release the projector by pressing >> sideways on the clip. >> >> What I'm thinking of would involve printing an overhang, but maybe there's a >> better way. >> I'm not even sure what this feature is called. Second pic on this page >> gives the general idea. >> http://www.redheadbabymama.com/2012/04/review-in-babyproofing-safety-1st.html >> >> I want something I can print in one piece with the main body if that's >> possible. >> >> Ideas? >> > > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org — Kenneth Sloan kennethrsloan@gmail.com

J

jon

Sat, Sep 3, 2016 1:44 PM

You could try PLA. There are more flexible materials available now
(nylon, NinjaFlex) too.

On 9/3/2016 9:38 AM, Kenneth Sloan wrote:

Overhang is not an issue.

The real issue is the material used to print the part. I have done many projects over the past 5 years that involved this sort of “click fit”. I was running a 3D Print Lab which provided service - and also trained students. Of course, I also had many “personal” projects - and a major theme was constructing this kind of snap-together constructions.

We were purely an ABS shop - and ABS proved to be relatively unforgiving under multiple “snap-on/snap-off” cycles.
If you make it too thick, it won’t bend. If you make it too thin, it will crack.

For your application, my first though is to consider a “twist-on” connection (like, say an SLR bayonet mount, or a pickle-jar lid.

You could try PLA. There are more flexible materials available now (nylon, NinjaFlex) too. On 9/3/2016 9:38 AM, Kenneth Sloan wrote: > Overhang is not an issue. > > The real issue is the material used to print the part. I have done many projects over the past 5 years that involved this sort of “click fit”. I was running a 3D Print Lab which provided service - and also trained students. Of course, I also had many “personal” projects - and a major theme was constructing this kind of snap-together constructions. > > We were purely an ABS shop - and ABS proved to be relatively unforgiving under multiple “snap-on/snap-off” cycles. > If you make it too thick, it won’t bend. If you make it too thin, it will crack. > > For your application, my first though is to consider a “twist-on” connection (like, say an SLR bayonet mount, or a pickle-jar lid. > >

D

dbvanhorn

Sat, Sep 3, 2016 2:07 PM

I am using PLA.

http://forum.openscad.org/file/n18320/projmount.png

Here's what it looks like now.

http://forum.openscad.org/file/n18320/soneed.jpg

--
View this message in context: http://forum.openscad.org/Clips-latches-spring-clips-tp18315p18320.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

I am using PLA. <http://forum.openscad.org/file/n18320/projmount.png> Here's what it looks like now. <http://forum.openscad.org/file/n18320/soneed.jpg> -- View this message in context: http://forum.openscad.org/Clips-latches-spring-clips-tp18315p18320.html Sent from the OpenSCAD mailing list archive at Nabble.com.

FV

Frank van der Hulst

Sat, Sep 3, 2016 8:28 PM

PLA is more rigid than ABS.

Some random ideas that hopefully help...

Presumably you've seen the "living hinge" thread on here? The same concept
can be applied to making springy objects out of PLA (e.g.
http://www.thingiverse.com/thing:756740).

Maybe design an ordinary hinge to use something like a ballpoint pen or
clothes peg spring to latch it?

I'd design one end or side of your mount with a small overhang, so that you
only need a clip or whatever at the other end. You should be able to get
away with a 1mm or so of overhang. Maybe make each end/side springy?

A couple of screws with large heads on either side/end would work as a
latch.

Can you put something on the 1/4-20 mounting screw that gets pressed down
onto the top of the projector?

On Sun, Sep 4, 2016 at 2:07 AM, dbvanhorn kc6ete@gmail.com wrote:

I am using PLA.

http://forum.openscad.org/file/n18320/projmount.png

Here's what it looks like now.

http://forum.openscad.org/file/n18320/soneed.jpg

--
View this message in context: http://forum.openscad.org/
Clips-latches-spring-clips-tp18315p18320.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

PLA is more rigid than ABS. Some random ideas that hopefully help... Presumably you've seen the "living hinge" thread on here? The same concept can be applied to making springy objects out of PLA (e.g. http://www.thingiverse.com/thing:756740). Maybe design an ordinary hinge to use something like a ballpoint pen or clothes peg spring to latch it? I'd design one end or side of your mount with a small overhang, so that you only need a clip or whatever at the other end. You should be able to get away with a 1mm or so of overhang. Maybe make each end/side springy? A couple of screws with large heads on either side/end would work as a latch. Can you put something on the 1/4-20 mounting screw that gets pressed down onto the top of the projector? On Sun, Sep 4, 2016 at 2:07 AM, dbvanhorn <kc6ete@gmail.com> wrote: > > I am using PLA. > > <http://forum.openscad.org/file/n18320/projmount.png> > > Here's what it looks like now. > > <http://forum.openscad.org/file/n18320/soneed.jpg> > > > > -- > View this message in context: http://forum.openscad.org/ > Clips-latches-spring-clips-tp18315p18320.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

D

dbvanhorn

Sun, Sep 4, 2016 6:05 AM

frankv wrote

Can you put something on the 1/4-20 mounting screw that gets pressed down
onto the top of the projector?

A second pair of eyes is usually useful! :) Yes I can. Instead of using
a nut, I can use a threaded coupler, and that would allow me to use a bolt
to secure a printed "arm" that goes across the top of the projector.

Not the solution I was looking for, but I think it will work nicely.
Thanks.

--
View this message in context: http://forum.openscad.org/Clips-latches-spring-clips-tp18315p18328.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

frankv wrote > Can you put something on the 1/4-20 mounting screw that gets pressed down > onto the top of the projector? A second pair of eyes is usually useful! :) Yes I can. Instead of using a nut, I can use a threaded coupler, and that would allow me to use a bolt to secure a printed "arm" that goes across the top of the projector. Not the solution I was looking for, but I think it will work nicely. Thanks. -- View this message in context: http://forum.openscad.org/Clips-latches-spring-clips-tp18315p18328.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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Clips, latches, spring clips..