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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Erector screw help!!
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<blockquote data-quote="ntsqd" data-source="post: 2225340" data-attributes="member: 93138"><p>The point that you keep consistently missing or ignoring is that just from the pic I can tell that the pitch is extra fine or finer. Hardware stores do not stock those and won't have a clue about where to even get them. Those are a rare thread pitch, they're not easily available. This is not a common thread at all. A place like Fastenall *might* have a source, bring your wallet as they're going to have to order a whole box of them.</p><p></p><p>My job is solving problems and I'm quite good at it. I know exactly how to make that screw and none of my sources are hardware stores. 5 mins in SW yielded this:</p><p><img src="https://photos.smugmug.com/photos/i-qLznKNT/0/2b35c5ad/M/i-qLznKNT-M.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Lacking actual dims I had to guess. If/when I received dims I can make a drawing and send it out for quote to a couple of local shops that specialize in small machined parts. The first screw will be expensive because of all of the set-up time. Each one after that gets progressively less expensive. </p><p><strong>EDIT:</strong> That groove in the screw head looks like it is for an o-ring, but I didn't see one in the pics. If there is an o-ring there, and it is being used for sealing rather than just holding position, then the dims for the groove will have fairly small tolerances.</p><p></p><p>Were I going to make something like this on the cheap then once a means to mfg the threads was determined I'd build up the rest of the screw with something like Devcon Aluminum putty, and once cured I'd machine in the needed details.</p></blockquote><p></p>
[QUOTE="ntsqd, post: 2225340, member: 93138"] The point that you keep consistently missing or ignoring is that just from the pic I can tell that the pitch is extra fine or finer. Hardware stores do not stock those and won't have a clue about where to even get them. Those are a rare thread pitch, they're not easily available. This is not a common thread at all. A place like Fastenall *might* have a source, bring your wallet as they're going to have to order a whole box of them. My job is solving problems and I'm quite good at it. I know exactly how to make that screw and none of my sources are hardware stores. 5 mins in SW yielded this: [IMG]https://photos.smugmug.com/photos/i-qLznKNT/0/2b35c5ad/M/i-qLznKNT-M.jpg[/IMG] Lacking actual dims I had to guess. If/when I received dims I can make a drawing and send it out for quote to a couple of local shops that specialize in small machined parts. The first screw will be expensive because of all of the set-up time. Each one after that gets progressively less expensive. [B]EDIT:[/B] That groove in the screw head looks like it is for an o-ring, but I didn't see one in the pics. If there is an o-ring there, and it is being used for sealing rather than just holding position, then the dims for the groove will have fairly small tolerances. Were I going to make something like this on the cheap then once a means to mfg the threads was determined I'd build up the rest of the screw with something like Devcon Aluminum putty, and once cured I'd machine in the needed details. [/QUOTE]
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Erector screw help!!
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