Ha! I understand like a grown up! So you made custom gears....hmmmm. So, in the picture of the fine gear set, there are two gears stacked to the right of the duplex. Are those index gears too? DanK
On Wednesday, September 6, 2023 at 6:07:24 PM UTC-4 bulk...@mmnet.com.au wrote: > Yes it is familiar lol it is a modified version of my chart with some of > the pitches rounded off. > > All the gears you seek are not legacy so not available anywhere they were > all made by me here is what the fine gear set looks like > > the little black gear you see is the index gear, I made these gears to > obtain fine pitches mostly for achieving smooth finishes when turning using > router bits such as core box bits while template following. and of course > to make a fine V thread if I wanted. > > > > > > Bill > > > > > > *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> *On > Behalf Of *cdkr...@gmail.com > *Sent:* Wednesday, September 6, 2023 11:08 PM > *To:* Legacy Ornamental Mills <legacy-orna...@googlegroups.com> > *Subject:* Re: Verification of understanding > > > > This chart should look familiar. This is where I found the 1/6 pitch > listed. It is a modified version of what was posted long ago. I made > formulas to calculate from known gear tooth counts in the pink area and > verified the results against the original content. The yellow highlights > are what comes standard with my REVO. The green areas are where I can enter > a different value and find new pitches. Ignore the blue and white areas > for now. The medium and fine gear packages that work on REVO are unknown > tooth counts. Would like to get them somehow. IIUC, the medium and fine > duplex gears will work in place of the standard duplex gear on the REVO. > > > > I do not yet fully grasp how interchangeable the gears are between all the > different models of manual LOMs. It looks like the WoodChuck and now (with > the advent of the 4X gear set) the larger LOM models can mount more gears > than is possible (currently) on my REVO. Is there a compatibility chart > somewhere? > > > > I have the charts you posted, but thank you for bringing them forward > again. I have only the shipped (yellow highlights) gears for my REVO, so > if the chart is accurate, *I need the C gear and the fine duplex, I > think. * > > > > Can anyone get me the tooth counts on the fine and medium duplex gears, > assuming they work on the REVO? > > > > And, yes, because it looks like custom gears are in the future for me, I > would like the DXF files you offered. Thank you for offering. > > > DanK > > On Wednesday, September 6, 2023 at 2:28:03 AM UTC-4 Curt George wrote: > > Hello Dan. > > > > I can see two different ways to get what you are looking for, but Im not > sure if either way will work for you. > > > > As I understand it. the "C" gear is what you need? > > I am posting the two gear charts (one for the Legacy and the other for the > Wood Chuck mill.) > > The Wood Chuck chart uses the tooth count , so a 6"TPI would be a 30 > toothed gear on the standard gear set. > > NOW When I was playing around with making plastic gears for my 200, I > found the diametric pitch for both the large tooth gears as well as the > older finer gears used on the old legacy's and WC Mills. > > I can send you those DFX files if you like? > > > > Now on to my question, Standard gear set and the "C" gear should be > something every Legacy owner already has. So What is, or what am I > missing? (I will have to go back into your first posting to see if I > missed something.) > > > > Its late. I will sign off now and try to get back to you tomorrow > morning/before work. > > > > I hope the charts help? > > > > talk more later. > > > > Have a good night. > > > > C.A.G. > > > > On Tuesday, September 5, 2023 at 11:51:49 PM EDT, <bulk...@mmnet.com.au> > wrote: > > > > > > Ok so 1/6 pitch then is 6.024 threads per inch no gears on the legacy I > know of cut a 1/6 of an inch pitch the .25 gears and the C gear cut a one > inch pitch not 1/6 please enlighten me what am I not seeing? As far as I > can tell you would need some serious math and work out what tooth drive > gear needs to be cut to mill a 1/6 inch pitch > > > > Bill > > > > *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> *On > Behalf Of *cdkr...@gmail.com > *Sent:* Wednesday, September 6, 2023 8:18 AM > *To:* Legacy Ornamental Mills <legacy-orna...@googlegroups.com> > *Subject:* Re: Verification of understanding > > > > Bill, the wooden thread TPI used most commonly on 3/4" diameter stock is 6 > TPI. The Woodcraft thread box I was trying to use produces a 60° thread > profile at 6 TPI. So I want to cut 6 TPI with a V router bit on a 3/4" > dowel. Some wooden threads were 60° and some were 90° degree profiles, > depending upon use. 90° profiles are, of course, stronger and more often > used on the huge screws of presses and vises. Either profile can be used on > any pitch. I'm seeking a 1/6" (0.167") pitch, which shows up on the charts > with a "C" driver gear (45 teeth) driving a "fine gear package" set against > the "standard" 88 tooth index gear, all driven by the "standard" 4 TPI lead > screw. > > > > Now, your math was correct, but not the understanding of what I'm headed > for. "3/4 -6" is the same format thread designation as "1/4 -20" or "10 - > 32". > > .ǝldɯɐxǝ ɹoɟ ᘔƐ - 0⇂ ,0ᘔ - ߈/⇂ ,9 - ߈/Ɛ ?dlǝɥ sᴉɥʇ plnoM > LOL! > > DanK > > On Tuesday, September 5, 2023 at 5:46:20 PM UTC-4 bulk...@mmnet.com.au > wrote: > > So if I understand correctly is what your trying to cut a ¾ inch pitch > thread with a V router bit ? a wooden v thread back in the day was usually > a 90 degree V not 60 degree and the threads per inch would be 1.3 if I’m > doing my math right. > > > > Bill > > > > *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> *On > Behalf Of *cdkr...@gmail.com > *Sent:* Wednesday, September 6, 2023 1:47 AM > *To:* Legacy Ornamental Mills <legacy-orna...@googlegroups.com> > *Subject:* Verification of understanding > > > > Hi everyone, > > I've been studying all the related pitch information I can find and have > accumulated this into a condensed spreadsheet workbook with four sheets for > my use with the REVO. I struggled to understand how the various pitches > were arrived at until I finally reduced it to basic specifications: number > of teeth on the gears (sprockets) in the train. The posted charts make so > many (reasonable) assumptions, that it was difficult to find the gear > combinations to make an unlisted pitch. So I rebuilt the charts using > formulas and can now instantly find the results using any pitch drive screw > and any (standard) gear combination. Custom ones will be added as needed. > Adding to the confusion was that different legacy machines used different > combinations and not all are interchangeable. The charts were short on > documentation what applied where. > > > > I was driven to do this because of a hand plane I'm restoring. It's a > wooden one with fancy wooden threaded fence adjustment which was missing. > I tried using my 3/4" thread box but the cutter was dull and after several > hours fettling the thing, gave up because I could not make it cut clean > threads in old cherry, no matter what tricks I tried, like soaking in oil, > wax, and various other techniques. It was just too brittle. I want PERFECT > threads and realized I have a PERFECT thread cutting machine...the REVO. > I've used the metal lathe to cut threads in my urn, but why not make the > REVO cut threads of all sizes and pitches? And while I'm at it, fine > checker some stuff. Or quarter turn 30" ribbons. > > > > So guess what? A 3/4 - 6 is "standard" wood thread but the REVO did not > come with 1/6" pitch capability. After reworking the sheets Bill and > others have posted, I quickly narrowed the search to a "C" drive gear > driving a "fine gear package" idler set against the standard index gear. > See what I mean? I can't take that description to a laser cutter without > being laughed out of the shop. So my sheet will tell me number of teeth on > each gear in the train so if I need a custom one, I'll have the specs at > hand. > > > > Now the problem is to find a "standard" solution, a "C" gear and the "fine > gear package". Any hints? > > > > DanK > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/legacy-ornamental-mills/d4164373-c081-41be-aa8f-51786c4d4711n%40googlegroups.com > > <https://groups.google.com/d/msgid/legacy-ornamental-mills/d4164373-c081-41be-aa8f-51786c4d4711n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/legacy-ornamental-mills/292c954e-4cf0-44bf-875e-db7fd9cef32fn%40googlegroups.com > > <https://groups.google.com/d/msgid/legacy-ornamental-mills/292c954e-4cf0-44bf-875e-db7fd9cef32fn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > 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. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/legacy-ornamental-mills/002101d9e075%24731ee3e0%24595caba0%24%40mmnet.com.au > > <https://groups.google.com/d/msgid/legacy-ornamental-mills/002101d9e075%24731ee3e0%24595caba0%24%40mmnet.com.au?utm_medium=email&utm_source=footer> > . > > -- > 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. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/legacy-ornamental-mills/647763ae-c59a-45aa-9e99-fd8d9fb31204n%40googlegroups.com > > <https://groups.google.com/d/msgid/legacy-ornamental-mills/647763ae-c59a-45aa-9e99-fd8d9fb31204n%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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