Yes, that does look good in wood. And it feels good in the hand. One can "get a grip" without discomfort. A very very good grip. And I believe, based on the threads I was able to cut before the plastic gear broke, it will be quite clean. For the checkering work, a special bit may have to be made (or bought) but I've made so many of them that I find it trivial. The trick is to get a super fine point that still cuts.
I have some ideas to sort through for high count indexing options and a strong contender is emerging. If I can solve one minor convenience issue, then I'll see what the hive mind thinks. DanK On Saturday, October 7, 2023 at 10:11:15 PM UTC-4 Tim Ziegler wrote: > wow I like that. Yes that is exactly what I want to see and do. > > Kind Regards, > > Timothy J. Ziegler > Ziegler WoodWork & Specialty > Ziegler Laser Worx LLC > 14171 160th Ave. > Foreston MN 56330 > > 320-294-5798 <(320)%20294-5798> shop > 320-630-2243 <(320)%20630-2243> cell > > On Sat, Oct 7, 2023 at 5:41 PM <bulk...@mmnet.com.au> wrote: > >> I have done checkering in metal on my metal shaper but that can only be >> done on flat stock . >> >> >> >> The only way on round wood I have seen and tried myself with limited >> success lol is on the wood lathe with the robert sorby spiralling tool >> >> >> >> Seen here but with practice I think will work quite well but on the >> legacy dan will be the first I am very interested >> >> In seeing what he comes up with chipping might be a problem we with have >> to wait and see >> >> >> >> Bill >> >> >> >> *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> >> *On Behalf Of *Tim Ziegler >> *Sent:* Sunday, October 8, 2023 8:35 AM >> *To:* legacy-orna...@googlegroups.com >> *Subject:* Re: Sprocket development >> >> >> >> yes I would say very true. >> >> I have been doing some on my Laser Engraver though. >> >> >> Kind Regards, >> >> >> >> Timothy J. Ziegler >> >> Ziegler WoodWork & Specialty >> >> Ziegler Laser Worx LLC >> >> 14171 160th Ave. >> >> Foreston MN 56330 >> >> >> >> 320-294-5798 <(320)%20294-5798> shop >> >> 320-630-2243 <(320)%20630-2243> cell >> >> >> >> >> >> On Sat, Oct 7, 2023 at 4:15 PM cdkr...@gmail.com <cdkr...@gmail.com> >> wrote: >> >> And mechanical machine checkering on LOMs is very limited to >> >> cylinders with very little if any profile. So the application may be >> >> pretty limited, but awesome if done well. >> >> DanK >> >> >> >> On Saturday, October 7, 2023 at 5:12:59 PM UTC-4 cdkr...@gmail.com wrote: >> >> Not yet, Tim. It's a ways off until I can figure a way to index >> >> high counts over a very wide range. >> >> DanK >> >> On Saturday, October 7, 2023 at 4:27:44 PM UTC-4 Tim Ziegler wrote: >> >> Wow thats a mouth full of information Dan. >> >> Very impressive and I for one am interested in the Checkering concept. >> >> I have a customer that I laser game calls for and if I could also do the >> checkering for >> >> him wow would he be impressed. >> >> Do you have any pix of some of the checkering? >> >> >> Kind Regards, >> >> >> >> Timothy J. Ziegler >> >> Ziegler WoodWork & Specialty >> >> Ziegler Laser Worx LLC >> >> 14171 160th Ave. >> >> Foreston MN 56330 >> >> >> >> 320-294-5798 <(320)%20294-5798> shop >> >> 320-630-2243 <(320)%20630-2243> cell >> >> >> >> On Sat, Oct 7, 2023 at 10:08 AM cdkr...@gmail.com <cdkr...@gmail.com> >> wrote: >> >> If you are referring to the checkering pitch spreadsheet, (which is the >> only >> >> place I use "number of starts" calling it "number of divisions") the >> number >> >> of divisions (or starts) determines the circumference of the work piece. >> >> That's why the circumference of workpiece is pink. It's directly related >> >> to the number of divisions (starts), a protected calculation. When >> >> checkering, you can have any number of starts, but the diameter >> >> (and circumference) of the workpiece have to be adjusted accordingly. >> >> >> >> The purpose of the chart is to determine the diameter of the workpiece >> >> based upon several design factors including the number of divisions >> >> (or starts) specified. As you pointout, the circumference of the >> >> workpiece has to be a multiple of the number of divisions (starts), >> >> especially when checkering. >> >> >> >> So to effectively use the chart, it handles the "complicated" math to >> >> reveal the diameter of the workpiece based upon the design considerations >> >> entered in the green spaces. >> >> >> >> In designs other than checkering, diameter and starts are not that >> critically >> >> related if one uses an index for number of starts, depending upon what >> effect >> >> one is headed for. >> >> >> >> Legacy videos teach that the spiral designs, number of starts, and >> diameter >> >> are critically related. I disagree. In some cases they are co-dependent >> very tightly, >> >> not so much in others. The primary reason for this approach seems to be >> >> that they do not index the number of starts. They adjust the frame along >> >> the lead screw a distance related to the workpiece diameter. >> >> >> >> Since modifying my REVO to be able to index spiral starts, I have >> intentionally >> >> opened up a world of design options not otherwise reachable (reliably), >> >> while at the same time increasing the repeatable accuracy of the >> >> synchronization between travel and rotation. >> >> >> >> DanK >> >> On Friday, October 6, 2023 at 9:11:13 PM UTC-4 bulk...@mmnet.com.au >> wrote: >> >> Well the number of starts, just remember the amount you move the saddle >> between starts must divide into the leadscrew tpi >> >> For it to work but I’m sure you know that already. >> >> >> >> Bill >> >> >> >> *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> >> *On Behalf Of *cdkr...@gmail.com >> *Sent:* Saturday, October 7, 2023 3:08 AM >> *To:* Legacy Ornamental Mills <legacy-orna...@googlegroups.com> >> *Subject:* Re: Sprocket development >> >> >> >> I'm eventually going to change the lead screw to an 8 TPI acme, but that >> heads the >> >> wrong direction for what I really want to try: checkering. I think a 6" >> pitch >> >> will work on the 1 1/4" diameter I find comfortable for handles. I can >> reach that >> >> pitch with the stock gears that came with REVO. The big issue >> >> is the number of starts required and finding an indexer that fine. >> >> >> >> Some good comments and pointers. Yes, Tim, please post the pictures. >> >> >> >> Keep in mind that I have a REVO, so it won't be doing heavy duty stuff. >> And I >> >> don't push my machines real hard. >> >> DanK >> >> On Friday, October 6, 2023 at 7:13:51 AM UTC-4 Tim Ziegler wrote: >> >> that seems like the best solution Dan. >> >> >> Kind Regards, >> >> >> >> Timothy J. Ziegler >> >> Ziegler WoodWork & Specialty >> >> Ziegler Laser Worx LLC >> >> 14171 160th Ave. >> >> Foreston MN 56330 >> >> >> >> 320-294-5798 <(320)%20294-5798> shop >> >> 320-630-2243 <(320)%20630-2243> cell >> >> >> >> On Fri, Oct 6, 2023 at 6:05 AM cdkr...@gmail.com <cdkr...@gmail.com> >> wrote: >> >> Or just download this and overwrite the original. >> >> DanK >> >> >> >> On Friday, October 6, 2023 at 6:33:02 AM UTC-4 cdkr...@gmail.com wrote: >> >> Bill, Cells B4, C4, and I2 should be green and editable on the Sprocket >> ratio sheet. >> >> I found that I failed to unprotect I2. To make it editable go to >> "Tools>Unprotect sheet" >> >> and toggle it off. If you want to re-protect the sheet while leaving I2 >> editable, then >> >> make I2 the current cell and uncheck the box at >> >> "Format>Cells>Cell protection>Protect cell". Then you can go >> >> back to "Tools>Protect sheet" and toggle protection back on. Optional >> safety feature. >> >> >> >> Sorry to make you work for it! Any other issues, let me know please. >> I'm using >> >> Libre Office Calc, so if you opened it with Excel or some other >> spreadsheet program >> >> the commands may be different. Thanks for the heads up. >> >> DanK >> >> >> >> On Thursday, October 5, 2023 at 10:29:40 PM UTC-4 bulk...@mmnet.com.au >> wrote: >> >> I did find it Dan but there is no editing option that works to put in say >> 6 tpi to find out what sprockets to make >> >> That’s why I asked the question >> >> >> >> Bill >> >> >> >> *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> >> *On Behalf Of *cdkr...@gmail.com >> *Sent:* Friday, October 6, 2023 12:35 PM >> *To:* Legacy Ornamental Mills <legacy-orna...@googlegroups.com> >> *Subject:* Re: Sprocket development >> >> >> >> Hey Bill, >> >> Dan how about making a sprocket spread sheet that cover lots of tpi and >> pitches I for one would be interested in that >> >> You can start with mine and add to it the different threads like your 6 >> tpi this would be good for using plastic >> >> Instead of metal. >> >> >> >> Bill >> >> I think I have already done what you are suggesting. The last tab of >> workbook >> >> I've posted has the title "sprocket ratios" and what you are suggesting >> is what >> >> that's all about. I thought you saw those tabs. >> >> I'm gonna try cutting the acrylic sprockets when the time comes to prove >> to >> >> myself one way or another that acrylic sprockets will be durable. Gears, >> >> definitely not. But sprockets are a whole different beast. I have the >> material >> >> and no other, so that's where I'll start. I'm open to learning. >> >> DanK >> >> On Thursday, October 5, 2023 at 9:07:14 PM UTC-4 bulk...@mmnet.com.au >> wrote: >> >> Delrin would be my first choice to me plexiglass is for windows not gears >> that’s just my thoughts >> >> >> >> Bill >> >> >> >> *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> >> *On Behalf Of *Okla Mike (Liltwisted) >> *Sent:* Friday, October 6, 2023 11:13 AM >> *To:* legacy-orna...@googlegroups.com >> *Subject:* Re: Sprocket development >> >> >> >> My only caution for you is that there will be an easy grip of a chain but >> all that torque will be transferred to the shaft. You will really have to >> beef that area up if you will be doing "work". If you are doing just low >> pressure or timing, that shaft will not be so vulnerable. I suggest using >> something besides plexiglass. >> >> Mike OK >> >> On 10/5/2023 5:12 PM, cdkr...@gmail.com wrote: >> >> Yep, found that out the hard way. Was half expecting it, though. But >> acrylic >> >> should be fine for sprockets because the pressure is spread over almost >> >> half of the sprocket instead of focused on a tiny contact point of >> gearing. >> >> Is that a reasonable expectation? >> >> DanK >> >> On Thursday, October 5, 2023 at 4:21:06 PM UTC-4 Curt George wrote: >> >> Hey Dan. >> >> >> >> Acrylic and Plexiglas are to brittle to work for gears, (at least for the >> long term.) But I have had luck with Acetal and Delrin/POM H. work very >> well for the gears that I've made. These plastics work/cut well on the >> Laser as well. >> >> >> >> NOTE: I have Acetal/plastic gears meshing up with steel gears for a long >> time, Only slight ware, even though the steel is much harder then the >> plastic. >> >> >> >> NOTE: increasing the speed of the gears is hard ON the gearing, but if >> you want to slow the gearing down, going small works easy. EXP. my x2,3,4 >> gear set. Using the 96 tooth gear form the Legacy and 24,32,48 gears also >> standard gears. (can be found in our archives... >> >> >> https://groups.google.com/g/legacy-ornamental-mills/c/YrTllthCU-o/m/eZ7juNXZBAAJ >> >> >> >> >> C.A.G. >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On Thursday, October 5, 2023 at 03:30:31 PM EDT, cdkr...@gmail.com < >> cdkr...@gmail.com> wrote: >> >> >> >> >> >> I wish I had listened to "sprocketman" BEFORE going to all the trouble to >> make gears to produce a 6 TPI threaded dowel. But then, we wouldn't have >> the calculators I fussed over. What drove home the point in my thick skull >> was while working on the sprocket calculator I discovered that a simple >> pair of sprockets, a 30 tooth and a 20 tooth would produce the desired 6 >> TPI. DOH. Larger sprockets of 60 tooth and 40 tooth and several other >> combinations would do the trick. >> >> >> >> So, CDO (which is OCD in alphabetical order like it should be) is pushing >> me to find a sprocket and hub system that makes changing very easy. It >> looks like, after a lot of searching, that LOM owners will have to build >> their own hubs. Going further down that path, a pair of special hubs which >> hold type A plate sprockets would be desirable, one for the driver and one >> for the lathe. Then it dawns on me that 1/8" acrylic is easily cut into >> sprocket shapes and is durable because the teeth are relatively large and >> the load is widely distributed. And cheap. So, putting it all together, >> three special hubs (one to hold the plates for machining the mounting screw >> holes and sprocket roots), an idler sprocket, and a length of #25 chain are >> all that's needed for a base system. That sets up a scenario where a >> desired pitch can be had by cutting one or two sprockets from acrylic. >> There are online calculators that draw the sprockets to scale for printing >> and subsequent machining. The range of pitches is quite broad, adds a few >> to the gear pitch range and is a good alternative to the gears LOM made for >> the overlap. In other words, it opens up opportunities for those of us >> with limited budgets and can't find the needed gears. >> >> >> >> So that's what I'll be pondering for awhile. Any recommendations on >> sprocket hole sizes? >> >> >> >> To keep the plates flat and easy to make, I'm thinking the hub to have a >> 3/4" diameter stub for centering the plate and a pair of screw holes to >> hold the plate to a flange which would have to be at least 1 1/4" >> diameter. If the center hole for mounting the hub can be smaller, then >> perhaps a 1/2" diameter stub reducing the flange needed to about 1" >> diameter. Either way, the goal would be to make the hubs so they will hold >> sprocket plates interchangeably. Universal within the range of the >> machine's capacity. >> >> 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/c79fc0d0-ef33-4797-9ad8-8f4a7f2c74b3n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/legacy-ornamental-mills/c79fc0d0-ef33-4797-9ad8-8f4a7f2c74b3n%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 >> 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