Well the engineering approach here would involve:
It would be hard to truly test the hinge without breaking a few… (but they cost next to nothing to print!)
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Cool!
Ken,
I’m having a co-worker reviewing my son’s 3D drawings to improve the design. I should have new parts next week to test them out.
Thanks,
Norberto
From: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of "Kenneth L. Owen" <tx83...@bellsouth.net>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Saturday, March 10, 2018 at 7:20 AM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: [sebhc] H19, H88, H89, Z90 Detachable Hinge
Hi All,
--
Awesome! At least one of those tests is repeatable (the cable thing). Not sure you want to toss the lid on the floor though…!
To view this discussion on the web visit https://groups.google.com/d/msgid/sebhc/F20D6A8C338C4FA0867600897F8E4C27%40KenPSPC.
Any chance of posting an .STL file for the hinge?
-------- Original Message --------
Subject: Re: [sebhc] H19, H88, H89, Z90 Detachable Hinge
From: Norberto Collado <norberto...@koyado.com>
Date: Sat, March 10, 2018 3:06 pm
To: "se...@googlegroups.com" <se...@googlegroups.com>
Cool!Ken,
I’m having a co-worker reviewing my son’s 3D drawings to improve the design. I should have new parts next week to test them out.
Thanks,NorbertoFrom: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of "Kenneth L. Owen" <tx83...@bellsouth.net>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Saturday, March 10, 2018 at 7:20 AM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: [sebhc] H19, H88, H89, Z90 Detachable Hinge
Hi All,More than once, the topic of replacements for the plastic hinge used on the cabinet top for H-19, H-88, H-89 and Z-90 computer has been on SEBHC. I, too, have some units with broken hinges. I decided to see what could be done.First, I worked out a simple metal hinge replacement and took it to my machinist. He told me this was a good candidate for 3D Printing. Norberto’s son, Hector, is taking a course on 3D printing and he developed the model file. The print he made fit and worked but was not a polished part and there was some reservation about strength and durability. Mr. Gene Buckle felt that a properly printed part should work just fine. We sent him the model file, he printed two sets of hinges and sent them to me for evaluation. They arrived this morning.I installed a set of hinges, no problem – perfect fit. The top installed and operated just like with the original hinge. Now I am ready to evaluate the durability, but HOW short of breaking it.Attached is a PDF picture of the hinges and the 2D drawing from which the model was made.Comments and suggestions will be appreciated.
If any need new hinges and want to get a set for evaluation, please contact Mr. Gene Buckle who can give a price for a set
-- ken
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-------- Original Message --------
Subject: Re: [sebhc] H19, H88, H89, Z90 Detachable Hinge
From: Norberto Collado <norberto...@koyado.com>
Date: Sat, March 10, 2018 3:06 pm
To: "se...@googlegroups.com" <se...@googlegroups.com>
Cool!Ken,I’m having a co-worker reviewing my son’s 3D drawings to improve the design. I should have new parts next week to test them out.Thanks,Norberto
From: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of "Kenneth L. Owen" <mailto:tx83...@bellsouth.net>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Saturday, March 10, 2018 at 7:20 AM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: [sebhc] H19, H88, H89, Z90 Detachable Hinge
Hi All,More than once, the topic of replacements for the plastic hinge used on the cabinet top for H-19, H-88, H-89 and Z-90 computer has been on SEBHC. I, too, have some units with broken hinges. I decided to see what could be done.First, I worked out a simple metal hinge replacement and took it to my machinist. He told me this was a good candidate for 3D Printing. Norberto’s son, Hector, is taking a course on 3D printing and he developed the model file. The print he made fit and worked but was not a polished part and there was some reservation about strength and durability. Mr. Gene Buckle felt that a properly printed part should work just fine. We sent him the model file, he printed two sets of hinges and sent them to me for evaluation. They arrived this morning.
I installed a set of hinges, no problem – perfect fit. The top installed and operated just like with the original hinge Now I am ready to evaluate the durability, but HOW short of breaking it.
Attached is a PDF picture of the hinges and the 2D drawing from which the model was made.Comments and suggestions will be appreciated.If any need new hinges and want to get a set for evaluation, please contact Mr. Gene Buckle who can give a price for a set-- ken
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I think you’re right Alan. We can learn from “practical testing” if these are strong enough. I’d say install and use them and see how they work…
From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Alan Hampson
Sent: Monday, March 12, 2018 10:12 PM
To: SEBHC <se...@googlegroups.com>
Subject: Re: [sebhc] H19, H88, H89, Z90 Detachable Hinge
Ken & Norberto,
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This will be an interesting experiment Ken. I believe conventional logic suggests that the ABS should be stronger. I’ll be interested to see what you find!
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There was a youtube video of using different 3D printed materials to replace a broken prop on an outboard motor. ABS is more ridged but that also usually means it is more brittle. As I recall, almost all failed at the spline that didn't have the blades crack first.
You might try to track that video down.
Dwight
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