Great concept Dan. Well thought out. Kind Regards,
Timothy J. Ziegler Ziegler WoodWork & Specialty Ziegler Laser Worx LLC 14171 160th Ave. Foreston MN 56330 320-294-5798 shop 320-630-2243 cell On Tue, Oct 17, 2023 at 11:30 AM cdkr...@gmail.com <cdkra...@gmail.com> wrote: > For sure, Milt, I would prep the wood if working on a fine piece. As Tim > pointed out, I'm working on scrap to test the principle of pushing the REVO > to this extent. > > This bit is as sharp as I know how to make one. It's a 60° cutter reground > to an infinite point, then a relief grind behind the flat cutting surface > sneaking > up on the cutting edge of the flat. Then two strokes on a fine Arkansas > stone > at an angle to relieve the tip. Once that's done, the now off center > cutting tip > "wobbles" about 0.0001" so it doesn't just drag along. I learned to do > this > working in the tool and die department at Jostens where extremely fine > detail was cut into the die blocks before they were hardened. It's not a > sheer > down cut which would minimize the fuzzing, but that wasn't a problem in > metal! > > The hand checkering tools finish out the cut at 90°, so the diamonds are > low and sharp. A 90° might do well enough in a prepared surface that touch > up wouldn't be required. > > I set the depth using feeler gauge strips under the depth stop, but it's > real > hard to tell when that sharp a point is at the surface. Yes, I probably > was > cutting too deeply, at least in places. I found backlash in the driving > spur, > so that didn't help. > > Preparing an oak blank for 72 divisions of 18 LPI. > > DanK > On Tuesday, October 17, 2023 at 12:28:59 AM UTC-4 bulk...@mmnet.com.au > wrote: > >> Perhaps try cutting not so deep also soaking the wood in oil for a few >> hours before cutting can greatly reduce chipping and tearing I do that >> >> For some wood threads >> >> >> >> Bill >> >> >> >> >> >> *From:* legacy-orna...@googlegroups.com <legacy-orna...@googlegroups.com> >> *On Behalf Of *cdkr...@gmail.com >> *Sent:* Tuesday, October 17, 2023 9:15 AM >> *To:* Legacy Ornamental Mills <legacy-orna...@googlegroups.com> >> *Subject:* Re: checkering videos >> >> >> >> Made tiny tiny chips today. Really bad choice of wood. Didn't think it >> would >> >> crumble like it has. My other blanks are scrap oak pieces, and they might >> be >> >> as bad. I'm going to adjust to a verified common checkering pattern of >> 18 LPI >> >> selected from the range of available checkering patterns and tools that >> run >> >> from 16 -32 LPI. And reduce the number of starts to 72 which gets me in >> the >> >> same ballpark of work diameter, which my target is about 1 1/4" give or >> take. >> >> This intersection piece should clean up pretty well. It's just real >> fuzzy. >> >> >> >> The blue circled area is what I worked on for cleaning up. It goes fast >> and >> >> the ridges are crisp in that area. >> >> >> >> Lessons: 1. A progress chart of hole positions is crucial to success. >> 2. And I am >> >> pushing the limits of the REVO rigidity because you can see every little >> >> inconsistency produced by tiny flexing in Z axis. 3. Choose better wood. >> Machine >> >> cutting is different than hand cutting from scratch. But this, as >> tedious as it is, is still >> >> much faster to get accurate layout, me thinks. >> >> >> >> I also restricted the data input for checkering lines per inch to what is >> available for >> >> touch up tools. It seemed like a good idea at the time. >> >> >> >> Time to think of Christmas trinkets..... >> >> DanK >> >> On Sunday, October 15, 2023 at 10:43:05 PM UTC-4 Tim Ziegler wrote: >> >> Thanks 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 Sun, Oct 15, 2023 at 8:55 PM cdkr...@gmail.com <cdkr...@gmail.com> >> wrote: >> >> The next video shows how I move the vernier arm after exhausting the span >> it offers. 80 starts is a >> >> good example to use because it requires the half degree resolution of the >> vernier. So I have done >> >> the first nine passes as this picture shows. No touchup on osage orange. >> Not the best choice. >> >> It looks rougher than it really is because the fuzz makes the cuts >> >> look irregular. It is a bit due to flexing in the machine, but should >> clean up nicely with checkering >> >> tools. Which reminds me. My checkering tools are 18 lines per inch...so >> don't ask my why I chose >> >> 21 lines for this sample! It's because.....well, you know..... >> >> Now to move the vernier >> <https://drive.google.com/file/d/1D13KWyNWbvLy_1e8H-gr0LHaE-GJCZZW/view?usp=sharing> >> to the next step. >> >> DanK >> >> >> >> On Sunday, October 15, 2023 at 9:45:41 PM UTC-4 cdkr...@gmail.com wrote: >> >> The first video is showing how I adjust the vernier positioning chart for >> the 80 starts I'm using on the >> >> sample checkering. I suggest doing a print preview. "File>Print Preview" >> and it will >> >> show you what to expect. You can print it from the preview or go back to >> "File>Print" from >> >> the main menu. >> >> Here is the first video >> <https://drive.google.com/file/d/15C2zrueB6u3XI3ax3em1S5PiSfyHjoVi/view?usp=sharing> >> which will be available in a little bit until I take it down for the space. >> >> >> >> DanK >> >> On Sunday, October 15, 2023 at 9:37:56 PM UTC-4 cdkr...@gmail.com wrote: >> >> I finally got the dynamic vernier index positioning chart workable. I >> can't be sure of error free yet, but it works accurately for 80 starts. >> >> >> >> It took me awhile to stretch my head around the expanded vernier >> operation on these high counts. It turns out that one has to go around the >> index several times in some cases. I had assumed it would be just once, >> like the simple indexes, and that was a stumbling block. Because the >> vernier has to be moved once the moves exhaust it's span, that creates a >> gap in the machining of the workpiece. Not to worry, it finishes those >> gaps on the next go arounds. >> >> >> >> I am debating about putting the three video clips together, but I think >> it does better separately. This is not a video friendly site, so I'll put >> them on my Google drive for a bit and post the links. This is how I will >> link the description to help understand it's corresponding video. Not a >> pro photographer, but I hope it explains the basics well enough. >> >> >> >> I'm attaching the now versioned Legacy Pitch Chart V10.1 which has the >> dynamic vernier positioning chart. It is set up with print ranges already, >> so once you select the number of divisions to cut, the chart will adjust >> and you just print it. It made it possible for me to keep track of what >> move I just did and what the next one is supposed to be. Again, no >> guarantees if you use other than Libre Office Calc. >> >> 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/cca9b5ae-fd00-4f3a-8582-98dce7be9427n%40googlegroups.com >> <https://groups.google.com/d/msgid/legacy-ornamental-mills/cca9b5ae-fd00-4f3a-8582-98dce7be9427n%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/b12acd2e-b011-4ee0-9595-b727e1152e93n%40googlegroups.com >> <https://groups.google.com/d/msgid/legacy-ornamental-mills/b12acd2e-b011-4ee0-9595-b727e1152e93n%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-mills+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/legacy-ornamental-mills/b22956ad-450d-4c6d-a339-1602fbb46a15n%40googlegroups.com > <https://groups.google.com/d/msgid/legacy-ornamental-mills/b22956ad-450d-4c6d-a339-1602fbb46a15n%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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