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Thread: My Wooden geared clock
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15th January 2012, 10:15 PM #31Senior Member
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Hi all just finished a star to that goes in between each number on clock dial...They measure 19mm and are 7mm high. The original design took 1 week to sort out....the cnc now takes 1 hr to cut out. 1 done only 11 left.
Dean.
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15th January 2012 10:15 PM # ADSGoogle Adsense Advertisement
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16th January 2012, 08:43 AM #32
You are certainly doing a good job on the clock Dean as you master that fancy machine.
Cheers, crowie
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16th January 2012, 09:38 AM #33
I love timber geared clocks, and aspire to 'one day' make just a simple one.
This one Dean, is something special. Some very clever design here, and the end result is going to be spectacular.
Nathan.
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17th January 2012, 09:19 AM #34
Dean
What tool are you using at what step down and feed rate? That looks a might fine finish on the star.
Russellvapourforge.com
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17th January 2012, 10:06 AM #35Senior Member
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Hi Russell, I am using a brand new 1mm straight cutter. Feed rate is max (15000 rpm) XY rate is 40mm/sec, Z is 10mm/s, cut in amount is .1mm. The my machine has live overide; that is you can vary the feed rate and spindle rpm on the fly(very handy) so i slowed the feed rate down to 50% because i chipped a star on a previous run. Machining time was 50 minutes! Hope that makes sense. I looked up Vapourforge impressive..what machines do you use there?
Dean.
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17th January 2012, 12:37 PM #36
Dean
I see your problem with chipping with the sharp edges you are try to get,
To cut faster I would suggest that you change your gcode so that you are climb cut up to the edges that way your cutter is pushing the timber back on to it self, not trying to pull it off. Hope you follow what I mean here.
I have had very good result by using a ball mills with a step down of 0.25mm,feed rate 1000mm, the result needs only a light sand to get the flat finish.
Attached is a job did for company logo, the size is 125 wide by 190 long. This was ruffed out with 6mm end mill then finished with 2mm ball mill. Ball milling took 35 minutes at the above rates. You can see I have hand block sanded some of the sides, just a few rubs to get the finish I wanted.
Hope this help you speed up your production on your clock.
I do like seeing beautiful things being made and your clock defiantly falls into this category
Russell
Ps if you want to try the 2mm ball mill I do have fewvapourforge.com
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17th January 2012, 02:08 PM #37Senior Member
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Thanks for the advice....I love hearing from those who machine for a living....I don't do G code as yet. I know the Roland does remove timber in a way i don't like ..as you said tearing away instead of pushing. I think its climb milling versus the usual way were talking about here. My stars are cut from a plug and are press fitted into a jig( a piece of timber with a hole in it) To remove the star after machining, a rod is used hole to eject it from underneath after its finished. If the star was glued to a surface there would not be a problem with chipping at the points. If there is a better way to machine these let me know!
cheers
Dean.
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18th January 2012, 02:55 PM #38Senior Member
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Hi all here is my newly completed timing wheel. The old one wobbled alot; so I re-designed it using trisoloc joint I developed and changed the gear from 4 to 5 spoke.I am anticipating that 5 spokes wont move as much as 4.Cant wait to see how it spins.
After reading somewhere on the forum how a member designed his clock in the shape of a C after his surname, I decided to carve our names and the year the clock was made.These are on the back of the timing wheel. (hopefully i want have to change the 12 to a 13!
On my previous 4 spoke gears I decided for the joint to exit the tooth right in the middle. This time i have decided to move the joint so it exited between the teeth as pictured.
cheers
Dean.Last edited by 1964deano; 18th January 2012 at 02:57 PM. Reason: Editing
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19th January 2012, 09:22 AM #39Senior Member
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20th January 2012, 03:11 PM #40
Dean have PM you
vapourforge.com
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21st January 2012, 12:16 PM #41Senior Member
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Hi All just ready to start on the hands. Does anyone have any designs or places to find them they know about?. I am quite partial to these hands
Cheers
Dean.
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24th January 2012, 05:24 PM #42
Dean
I have sent you a couple of PMs now, do not now if you got them. I got yours.
Send me your address and phone number and I can post the ball mill. OK
Russellvapourforge.com
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25th January 2012, 05:20 PM #43
Dean
It is in the post you should have it by the weekend
Russellvapourforge.com
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25th January 2012, 06:50 PM #44Senior Member
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Thanks for the chat and being generous!I'll Let you know how the 2mm ball goes with the cutting of the stars!
Here are some pics of the dial before and after; it has come up a treat.Anyone who has any ideas about what finish to use that would help. The dial is made from huon pine.
Before....
After...
Dean.
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26th January 2012, 09:19 AM #45
Dean this method of your just allows for so much creativity in design. I can see different colours and shades of timber on clock faces and many other projects
Russellvapourforge.com
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