Well I didn’t know that thank you
Bill From: legacy-ornamental-mills@googlegroups.com <legacy-ornamental-mills@googlegroups.com> On Behalf Of Tim Porter Sent: Tuesday, January 23, 2024 5:55 AM To: legacy-ornamental-mills@googlegroups.com Subject: Re: Split nut tap Hi Bill I spoke with Legacy this morning and they made their own lead screws and they were indeed square profile threads. This would make sense as the trapezoid profile would push the screw out of engagement with a load. If I had access to a lathe I would make a thread chaser tool to rework the profile of my half nuts made with the standard acme tap Anybody got a piece of lead screw floating around? Sent from my iPhone Tim and Cathy Porter 1902 Dandridge St Apt 7 Sun City Center. FL 33573 815-861-1505 On Jan 22, 2024, at 12:25 PM, Tim Porter <imatheb...@gmail.com <mailto:imatheb...@gmail.com> > wrote: Got me. Not sure where the machine came from, as it is far older than anyone here knows about but since we have the owners manual and stuff I am thinking it was purchased new. I don’t believe anyone would have changed out the lead screws and I am pretty sure they have a square profile. I will double check it when I go back in Wednesday. I am going to reach out to Legacy to see if they can shed any light on it. I am also going to put a notice on this board to see if someone had a piece of lead screw on hand. Sent from my iPad Tim and Cathy Porter 1902 Dandridge St D7 Sun City Center FL 33573 H. 813-419-4169 C. 815-861-1505 On Jan 22, 2024, at 12:05 PM, bulke...@mmnet.com.au <mailto:bulke...@mmnet.com.au> wrote: As far as I know legacy never made a square thread leadscrew I didn’t notice that in your pics where did that leadscrew come from ? One of the members might have one they could sell to you to make it right or there are places that sell it I believe Bill From: legacy-ornamental-mills@googlegroups.com <mailto:legacy-ornamental-mills@googlegroups.com> <legacy-ornamental-mills@googlegroups.com <mailto:legacy-ornamental-mills@googlegroups.com> > On Behalf Of Tim Porter Sent: Tuesday, January 23, 2024 3:45 AM To: legacy-ornamental-mills@googlegroups.com <mailto:legacy-ornamental-mills@googlegroups.com> Subject: Re: Split nut tap I took a closer look this morning while at the Woodshop and my half nuts were made with a tap that has trapezoid thread form, like a standard acme. The lead screw has square thread form, like a buttress thread. I am going to consult my Machinery Handbook to find what is needed. But the difference between the two profiles is preventing the half nuts I had made from fully engaging. Diameters and lead are correct. When I obtain the proper tap, I should be able to rethread my current blocks and be good to go. BTW there is no reason these half nuts couldn’t be made from hard maple. Sent from my iPad Tim and Cathy Porter 1902 Dandridge St D7 Sun City Center FL 33573 H. 813-419-4169 C. 815-861-1505 On Jan 22, 2024, at 7:04 AM, cdkr...@gmail.com <mailto:cdkr...@gmail.com> <cdkra...@gmail.com <mailto:cdkra...@gmail.com> > wrote: I bought a tap during the original discussion, but haven't used it yet. Now I'm hafta check. DanK On Monday, January 22, 2024 at 6:59:13 AM UTC-5 Tim Ziegler wrote: Looks good Bill and does look like the same company I bought from. I will try to look it up in my history too. But they sure worked great. Kind Regards, Timothy J. Ziegler Ziegler WoodWork & Specialty Ziegler Laser Worx LLC 14171 160th Ave. Foreston MN 56330 320-294-5798 <tel:(320)%20294-5798> shop 320-630-2243 <tel:(320)%20630-2243> cell On Sun, Jan 21, 2024 at 10:03 PM <bulk...@mmnet.com.au <mailto:bulk...@mmnet.com.au> > wrote: https://www.ebay.com/itm/175270225800?hash=item28ceeb6788:g:zNUAAOSwGk5f4Z1a <https://www.ebay.com/itm/175270225800?hash=item28ceeb6788:g:zNUAAOSwGk5f4Z1a&amdata=enc%25> &amdata=enc% this is the tap I would buy it looks like the one I bought but it is a trapezoidal tap so it will be 30 degrees and not 29 but because your tapping Delrin not metal there is a bit of leeway finding the exact correct one is almost impossible I looked for 10 years and of course you don’t know till you try it that it will work with a possible bad batch out there, I had to do that I took a chance and it worked, one last thing the recommended tapping drill Is a little small for Delrin and one degree out so 7/16 is what I used and it allows for the strange cutting properties of the Delrin. But all this is just what I would do you all must make up your own minds here is some Delrin I tapped https://www.youtube.com/watch?v=FOUW3xblB_4 <https://www.youtube.com/watch?v=FOUW3xblB_4&ab_channel=aussiman77181> &ab_channel=aussiman77181 Bill From: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> <legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> > On Behalf Of bulk...@mmnet.com.au <mailto:bulk...@mmnet.com.au> Sent: Monday, January 22, 2024 2:05 PM To: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> Subject: RE: Split nut tap So here is what I think, 4 threads per inch is 0.25000 of an inch pitch in metric that’s 6.350 mm so they might have made the tap at 6mm pitch which is 4.23 threads per inch and that will never fit our acme lead screws. That’s my 2 cents worth lol Bill From: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> <legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> > On Behalf Of bulk...@mmnet.com.au <mailto:bulk...@mmnet.com.au> Sent: Monday, January 22, 2024 1:44 PM To: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> Subject: RE: Split nut tap Here you go curt https://www.rolledthreads.com/what-is-the-difference-between-acme-and-trapezoidal-threads Bill From: 'Curt George' via Legacy Ornamental Mills <legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> > Sent: Monday, January 22, 2024 12:55 PM To: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> Subject: Re: Split nut tap Hey Bill Its been a while, I have two Acme screw taps (5/8-4 and One 5/8-8 tap) My first tap was a home made tap. I used a short piece of an Legacy Acme screw to make the tap. the other I bought on the web. some years back. (I wasn't aware there were a different thread angle. I guess I just got lucky?) I was wondering if these home made split nuts made by Tim P. could be re-molded. or if it would be a waist of time? HEY. Tim P. If you like, Send me the plastic, and I can try to cut them for you. I know that taps that I own fit my Legacy. If you can send me the part, I will tap it and send it back to you. Send me a private E-mail at curt....@yahoo.com <mailto:curt....@yahoo.com> and I will GIVE you the mailing info. C.A.G. On Sunday, January 21, 2024 at 08:34:39 PM EST, <bulk...@mmnet.com.au <mailto:bulk...@mmnet.com.au> > wrote: I don’t know if I could find them again at the time I showed everybody the right one but I didn’t get much Interest so I didn’t bother keeping track only you me and curt bought them if I remember Bill From: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> <legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> > On Behalf Of Tim Ziegler Sent: Monday, January 22, 2024 12:00 PM To: legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> Subject: Re: Split nut tap Curt he simply needs a tap like ours so it matches the acme thread. Kind Regards, Timothy J. Ziegler Ziegler WoodWork & Specialty Ziegler Laser Worx LLC 14171 160th Ave. Foreston MN 56330 320-294-5798 <tel:(320)%20294-5798> shop 320-630-2243 <tel:(320)%20630-2243> cell On Sun, Jan 21, 2024 at 3:34 PM 'Curt George' via Legacy Ornamental Mills <legacy-orna...@googlegroups.com <mailto:legacy-orna...@googlegroups.com> > wrote: Hello Tim Your problem doesn't sound right? Can you explain what is happening with these split nuts? Or perhaps show a photo of your set-up? I would really like to help you. but I need to know/see the problem... Dose the split nut fit the shaft if you lay it on the acme screw? Perhaps it was cut slightly off??? more latter. C.A.G. On Sunday, January 21, 2024 at 04:29:45 PM EST, Tim Porter <imath...@gmail.com <mailto:imath...@gmail.com> > wrote: Hi Folks I had two pair of split nuts made using a standard 5/8”-4 acme tap and for some reason it doesn’t quite fit the lead screw. I have checked it near the end of the shaft where there is no chance of wear. It’s like the lead is off a few thousands of an inch or the thread width of the tap is just a little too big. Driving me bonkers. Anyone had issues with making new half nuts? Thanks. -- You received this message because you are subscribed to the Google Groups "Legacy Ornamental Mills" group. To unsubscribe from this group and stop receiving emails from it, send an email to legacy-ornamental...@googlegroups.com <mailto:legacy-ornamental...@googlegroups.com> . To view this discussion on the web visit https://groups.google.com/d/msgid/legacy-ornamental-mills/e18b1952-602c-4937-ae7e-54735ee52e10n%40googlegroups.com <https://groups.google.com/d/msgid/legacy-ornamental-mills/e18b1952-602c-4937-ae7e-54735ee52e10n%40googlegroups.com?utm_medium=email&utm_source=footer> . -- You received this message because you are subscribed to the Google Groups "Legacy Ornamental Mills" group. 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