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A fórum moderátora: Amatőr, KisKZ, tweakie 
Fórum » Only in English » Technologies » Rotary engraving. (Anything relating to rotary / spindle engraving.)
Rotary engraving.
tweakie Dátum/Date: Vasárnap, 2013-07-14, 08:12 | Üzenet/Post # 1
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Anything relating to rotary / spindle engraving.
 
tweakie Dátum/Date: Vasárnap, 2013-07-14, 08:29 | Üzenet/Post # 2
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 Weather stones are quite commonly seen in Germany and the Nordic countries but not so common in the Netherlands. Perhaps that is all going to change. biggrin biggrin

Tweakie.

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Success consists of going from failure to failure without loss of enthusiasm.
 
picengraver Dátum/Date: Vasárnap, 2013-07-14, 12:50 | Üzenet/Post # 3
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 Tweakie,
Is a special stone required to predict the weather?  Do you have a source and cost? 

biggrin John
I paint with a blue light beam.
 
tweakie Dátum/Date: Kedd, 2013-07-16, 17:33 | Üzenet/Post # 4
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 biggrin nice one John. biggrin

There is an area in Sweden where very many of the stones have a natural hole through the centre (easier to tie the string). I have no idea of the postage cost or what the import duty may be but I have arranged for one to be sent to me in the UK for a trial - I will let you know if it works. biggrin

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.
 
picengraver Dátum/Date: Szerda, 2013-07-17, 00:43 | Üzenet/Post # 5
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 Tweakie,
Just make sure to get one with a big enough hole in the center to hold a candle so you can see it at night. lol
John
I paint with a blue light beam.
 
tweakie Dátum/Date: Szerda, 2013-07-17, 10:05 | Üzenet/Post # 6
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 biggrin biggrin biggrin

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.
 
editor Dátum/Date: Szombat, 2014-09-06, 05:51 | Üzenet/Post # 7
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 I read in one of the posts where someone was attempting to design a spindle that could be rapidly lowered and retracted to allow some sort of half-toning for images. i cannot find that thread but I have a suggestion. You are not doubt familiar with solenoids and that when power is applied to the coil, the moving iron core centers itself in the coil.
The same action happens in an electric motor, the rotor tends to center in the coil. So you can emulate a solenoid action by, perhaps, using a spring to retract the rotor until you energize the motor at which time the rotor rotates and pulls down into the stator (coil). You could build a rotor that had two cores which would allow it to be driven up and down in both directions.
Mike
 
tweakie Dátum/Date: Szombat, 2014-09-06, 13:05 | Üzenet/Post # 8
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 Hi Mike,

Welcome to the forum.

That sounds like an absolutely brilliant idea - it may need a bit of thinking out but I can see that system as making a great improvement in speed to DotG and similar halftone type software.

Please keep the ideas coming.  ok

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.
 
editor Dátum/Date: Szombat, 2014-09-06, 17:35 | Üzenet/Post # 9
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 It may be possible to use a pair of the electric motors they use for model aircraft. The most powerful motors develop as much as 5 horsepower (or over 3,500 watts).
Unfortunately, they will have to be disassembled to make this work and would probably require cooling since they are normally cooled by airflow from the propeller. Perhaps one could make up a fan that would mount on the shaft and blow cooling air over the motors and at the same time, blow the swarf away from the workpiece. wacko
 
tweakie Dátum/Date: Szombat, 2014-09-06, 18:24 | Üzenet/Post # 10
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 Hi Mike,

Yes indeed sir, thank you, a suggestion well worth investigating.

(The larger quad-copter motors have a big enough shaft diameter to remove and fit an ER11 collet holder + more suitable bearings etc.).

Something that you may find of interest  http://openbuilds.com/builds....ch3.762

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.
 
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