A fine example of many people doing excellent work to produce a necessary part that most of us take for granted. Thanks!
@MCITECH359 Жыл бұрын
Seriously 😢
@d6c10k45 жыл бұрын
Back about 1990 we built a mold for a fuel cap for a tractor that used a collapsible core like that. Worked great. What amazed me is it's just a two piece unit, the center round pin and the outer segmented collapsible core. The segmented fingers are all machined from one piece of steel with slots between the fingers to allow them to spring and collapse. What I always wanted to know is how they got the segments ground in between with it being one piece. If it's not a trade secret, I'd love to see how they manufacture the cores.
@JaakkoF3 жыл бұрын
You can insert a larger plug in the middle or something between the fingers to spread them and then grind with a very narrow edged wheel. But have to careful, as the geometry is a bit different when it is collapsed vs. spread out.
@NickSlaney5 жыл бұрын
Always talking about these, good to see how they actually work. Great video!
We have a mold in our shop now that uses collapsible cores just like this; finnicky things, but they're great when you have everything dialed in. Much better and cheaper than a hydraulic "un-threading" mechanism.
@daltanionwaves3 жыл бұрын
Brilliant example of collapsible core threads. Thanks for sharing. 🍻
@maokly16 ай бұрын
Much gratitude on valuable information
@randyhendrick30605 жыл бұрын
Very cool Phil. good stuff
@DDB1686 жыл бұрын
Very interesting. Thanks for the content.
@samsondongerton84335 жыл бұрын
Thanks for the help. Working on one now. Happens to be from DME as well
@agstechnicalsupport4 жыл бұрын
Thank you for posting such instructive content !
@kattlesheets99916 жыл бұрын
Strangely enough, I instantly recognized it from my 20 years in the Navy.
@MrEh56 жыл бұрын
Interesting as usual Phil.
@robertengl91526 жыл бұрын
My father designed the mold for Kiwi shoe polish caps that were threaded back in the 70's
@kyleeckhardt31033 жыл бұрын
Can this type of core be used in die casting aluminum? We are trying to eliminate a machined undercut in a cavity bore, and have the undercut as cast. Thanks!
@asty2323 Жыл бұрын
Did you succeed ?
@nunohenriques1003 жыл бұрын
Nice video...please note that they are build by Roehr, not DME...
@nshan2144 жыл бұрын
Thanks for ur nice class. It's really useful for me.... thanks... thanks... thanks
@longtermmold7200 Жыл бұрын
Good design, we could make it, if you need any Collapsible Cores or mold, please feel free to contact us.
@ismailkara14174 жыл бұрын
What is the material type of core. I wonder what kind of heat treatment is applied. can you help me?