Hey Tim.
If you want to go this route. I have left over parts from making my split nut.
I can either finish it off for you, or send your the parts and you can finish
off the part for your self.Either way, the hard part will be made much easer
for you. Then all you need to do is buy and mount the screw.and if your REVO.
brackets are the same as my 1000ex. this will be a snap to change out.Let me
know...
C.A.G.
On Monday, April 17, 2023 at 12:48:16 PM EDT, Tim Ziegler
<timjzieg...@gmail.com> wrote:
Excellent questions and math Dan, you had my brain spinning. you are far from
the only one that gets hung up on math. I'd say 75% of us or at least me for
sure gets really hung up and confused with it.so great to ask for charting and
examples. I am like you need to checker, or diamond pattern small items. I'm
still looking a gear changes along with Curts idea too. Its almost in our grasp
now. I have been tuning up my little Revo just for this type of work. so super
stoked to move one direction or other.
Kind Regards,
Timothy J. ZieglerZiegler WoodWork & Specialty14171 160th Ave.Foreston MN 56330
320-294-5798 shop320-630-2243 cell
On Mon, Apr 17, 2023 at 9:47 AM Dan Krager <cdkra...@gmail.com> wrote:
Hey Curt, thank you for sharing the result! That's a form of "checkering" that
I was hoping could be done on the REVO. Trained with a degree in mathematics,
I have trouble adding a column of numbers, so pitches get muddled in my head
easily. Well TBH, many things do. But I can't reconcile 1/4" or 3/8" pitch
with the picture. Here's my thought pattern: 8 TPI means that for every inch
of cutter travel the workpiece makes 8 revolutions. Going down to 1 TPI means
for every inch of travel the workpiece makes 1 revolution. So far so good? So
now 3/8" TPI means for every inch of travel the workpiece makes 3/8 of a
revolution (.375 X 360°=135°) and similarly 1/4TPI means for every inch of
travel the workpiece rotates 90°. Ow. That hurt.
Studying on the picture for a lengthy time with the understanding of how the
cutter moves in relation to the rotation, I begin to understand like a grownup.
But the math to convert this to, say a 60° checkering pattern on any given
diameter, eludes me yet. I can see that the "degree of checkering angle" (or
pitch) will vary with diameter of workpiece. Is there a chart available
anywhere that would help a dufus (like me) to determine what pitch is required
to maintain a pleasant 60° checkering effect on any given diameter? This would
be great for handles of all sorts. Perhaps it would be an extension of some
existing pitch charts?
DanK
On Monday, April 17, 2023 at 8:49:50 AM UTC-4 Curt George wrote:
Good morning everyone.
Tim this was the 3/8" pitch done with a 24 indexes, (OVER AND OVER AGAIN!) On
the first set of diamonds I found that I missed an index somewhere? So I ended
up with two rows of small diamonds and the rest being much larger, What I ended
up doing was re-work this hole thing over, To make it look right I ended up
doing two sets of 24 indexes over the first ones. ( One rope each way. That's
48 indexes.)(That doesn't sound bad, BUT, I did say there was a mess up, The
first time, So I ended up indexing this little bone handle some 100 times, to
get to what it looks like now.) Lots of work.And the diamonds are so small the
camera dose not pick up the details easily. I took 4 photo's of this handle and
only one photo shows up well.I will be trying to do this again, But not for a
while. ;-)
I have to go.talk to you all more latter today.
C.A.G.
On Monday, April 17, 2023 at 06:57:32 AM EDT, Tim Ziegler
<timjz...@gmail.com> wrote:
Yeah what was your pitch Curt?
Kind Regards,
Timothy J. ZieglerZiegler WoodWork & Specialty14171 160th Ave.Foreston MN 56330
320-294-5798 shop320-630-2243 cell
On Sun, Apr 16, 2023 at 11:54 PM <bulk...@mmnet.com.au> wrote:
So the pitch was ¼ then??
Bill
From: 'Curt George' via Legacy Ornamental Mills
<legacy-orna...@googlegroups.com>
Sent: Monday, April 17, 2023 2:19 PM
To: legacy-orna...@googlegroups.com
Subject: Re: Replacing the Legacy's 5/8-4 Acme screw with a 5/8-8 Acme screw
Thank you. ;-)
The cutting was a 1/8" diamond "V" bur bit made for a Dermal type of cutter.
C.A.G.
On Monday, April 17, 2023 at 12:04:47 AM EDT, <bulk...@mmnet.com.au> wrote:
Well it turned out very nice in the end I like it
Bill
From: 'Curt George' via Legacy Ornamental Mills
<legacy-orna...@googlegroups.com>
Sent: Monday, April 17, 2023 2:00 PM
To: legacy-orna...@googlegroups.com
Subject: Re: Replacing the Legacy's 5/8-4 Acme screw with a 5/8-8 Acme screw
Yes the leadscrew helped a lot, but the indexing was still a pain.
The diamond/checkering was suppose to be larger, I messed up and needed to
go all the way around (twice) to make everything uniformed.
Thank you .
C.A.G.
On Sunday, April 16, 2023 at 11:47:43 PM EDT, <bulk...@mmnet.com.au> wrote:
That latest bone turning is very nice curt, I assume you use the new leadscrew
To get that nice small diamond pattern on it?
Bill
From: 'Curt George' via Legacy Ornamental Mills
<legacy-orna...@googlegroups.com>
Sent: Monday, April 17, 2023 12:59 PM
To: legacy-orna...@googlegroups.com
Subject: Re: Replacing the Legacy's 5/8-4 Acme screw with a 5/8-8 Acme screw
Hello again everyone.
Tim I have no idea on how many ways Legacy mounted there acme screw shafts? On
my 1000ex its just a double locking shaft collar, On the 200 the acme screw is
turned down to fit into a shaft and is locked in place by a set screw.
On the third photo the bracket mounting on the 200 the two screws need to be
loosened up and the bracket slides away.
As I said before this experiment is just an attempt to turn smaller
ropes, the 1/4" and 3/8" pitches this new screw lets me achieve is will worth
the few dollars that I spent. ($11.00 for the screw and $38.00 for the tap.)
NOTE: I would like to remind everyone this is for small turnings,
On my 1000ex going smaller would not be as useful for me, basically due to this
machine is designed to turn LARGE spindles.
And going small would not really help me in normal operations I use my 1000 for
most of the time.
but having said that, it still would only cost me $40.00. So its not an
expensive MOD, Im just not sure it would be something that I need at this time?
But for my 200 this is the best tool for the jobs I am doing on NOW.
Bye the way here is today's bone handle. the small checkering worked. even
though I did make a few mistakes on the indexing...
C.A.G.
On Sunday, April 16, 2023 at 09:59:03 PM EDT, Tim Ziegler <timjz...@gmail.com>
wrote:
I agree. That would be great.
Kind Regards,
Timothy J. Ziegler
Ziegler WoodWork & Specialty
14171 160th Ave.
Foreston MN 56330
320-294-5798 shop
320-630-2243 cell
On Sun, Apr 16, 2023 at 7:56 PM <bulk...@mmnet.com.au> wrote:
Curt can you show a couple of pics showing how the leadscrew attaches to your
mill
So we can see how easy they are to swap out.
Bill
From: 'Curt George' via Legacy Ornamental Mills
<legacy-orna...@googlegroups.com>
Sent: Monday, April 17, 2023 6:08 AM
To: Legacy ornamental mills <legacy-orna...@googlegroups.com>
Subject: Replacing the Legacy's 5/8-4 Acme screw with a 5/8-8 Acme screw
I was asked to separate the topics again.
Last week I tried an experiment, I bought a 5/8-8 Acme screw form Mc
Master-Carr's web site.
https://www.mcmaster.com/products/screws/acme-lead-screws-and-nuts/?s=acme+screw
and replaced the Legacy's (my model 200) 5/8-4 Acme screw.
This experiment so far looks like it will work very well for what I am
attempting to do. Which is to
turn smaller spindles with more detail then what I could do before.
In the past using the .25 gear set, the finest pitch that could be made was a
1/2" pitch. But making a 1/2" pitch
on a spindle under 1/2" just dose not look right.
I found if I could go with a finer pitch on the acme screw I could achieve this
goal. By going with 8 tpi instead of 4tip I could basically cut all my gear
pitches down / 1/2 form the original pitch chart.
The process is very easy to do.
There are only to modifications that need to be done. #1 you need to make a new
split nut for the Legacy's carriage. (this is a very easy process.)
and #2 replace the acme screw.
Making the split nut, using the durlin plastic, I cut a square blank 2"x2"
block, Drilled a 1/2" hole through the middle of the block. Then cut this block
in 1/2, sand and or file the block to correct size and then drill and tap a
3/8" hole for the locking screw.
Next I cut the Acme screw to size. (I bought a 2' rod.) it only needed to be
20" form the 200. But I could have replaced my Legacy 1000 ex. 47" acme screw
is needed. by use loosen the shaft collars and then replacing the acme screw.
(on my 200 I did need to turn the ends of the screw to match up with the modal
200's parts, Again pretty easy to do.)
Here are some photo's . As well as the Chart, Bill made to shop the possible
pitches.
I hope this helps?
If anyone has some questions, Please fee free to ask.
So far I have had NO Problems using this concept. It has worked out VERY well
so far.
And the best part, If I choose to switch back, it can be done in min. 2 set
screws and one bracket need to be loosened up and slid out of the way , to
switch back.
This project only cost me $11.00 for the screw and $40.00 for the tap, (the
plastic I already owned.) and I was able to turn the ends of the screw on my
steel lathe. (appx. 20 min. of time to cut.)
Have a great day everyone.
C.A.G.
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