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Agreed. Kvom, I have machine a fair mount of graphite and will confirm that it is real messy.

A watchmaker would possibly be able to help you with a watch crystal up to about 40 mm diameter. They come in steps of 0.1mm A larger crystal can easily be machined up out of a thin sheet of perspex or other rigid clear plastic sheet. The lid of a small display box or other similar object can...

You can use copper or even silver for electrodes. Any material with good electrical conductivity as well as a high melting point will work as an electrode. Th wear rate varies from material to material and electrode type. i have used old tungsten carbide inserts to spark erode recesses into tool...

Thanks for the compliments. But I post here to give back, not for the compliments, because learn here all the time.

Kvom The resulting action is exactly the same as a normal universal joint. The output accelerates then decelerated twice per revolution in relation to the input shaft. The feed to the slant wheel adds a little to the overall speed but that is included in the calculations. What we have...

Here are two more months of progress. http://www.my-time-machines.net/astro_04-17.htm http://www.my-time-machines.net/astro_05-17.htm Working on engine turning(CNC) for the center dial. This is not complete yet. there is more to come.

I have had soft soldered steam pipes come loose on an engine. It depends a lot on how hot your steam is. Does the steam line go through the flame after it comes out of the boiler? If so you are super heating it somewhat and you could have problems.

Yes It worked very well for years as my main hacksaw at work. More clamps added for faster cutting on thick sections. No blade relief, easy to convert back to a shaper, it just clamped onto the tool holder. And it uses standard hand hacksaw blades. You can set the stroke and the portion of the...

Kvom. All the complications are linked through one gear train. Also each separate dial or hand is on a clutch.So , you can set every thing up once, then say, if the clock stops for a week, you disconnect the complications and crank them forward 7 days and every thing is correct again. The...

Bazmak I was approached by Mark Frank to build a dream clock. He had a comprehensive wish list. Mr. Frank is a very knowledgeable clock collector so his wish list was just as comprehensive. He sent me pictures and rough sketches of what he wanted. Then there was a period of exchanging...

Here are two photos of the punch and the result.

Kadora: How do you polish finished brass parts ? I usually work through the grades of wet/dry sandpaper. Starting at 600 grit or sometimes with 250 grit if there are really deep scratches then 1000, 2500, and 5000 and then brasso. How do you treat brass surface after polishing ? My...

This is the latest update on my clients website: http://www.my-time-machines.net/astro_04-17.htm Kvom: I cut out the plates on a scroll saw. Good marking out, a fine scribe line, is a must. A low power binocular microscope helps. I use the same saw for removing the metal between the spokes...

Terry. That is looking wonderful. I also really like your choice of colors. It makes it so much more like a full size. The casting look that you have on your machined components like the top of the tank is awesome. I have a daily check to see if there is any more progress. Lovely. Buchanan

Hou koers broer. en voorspoed.

I bought the bulk in England from Smiths metals in England but now buy from Brass And Copper in Sydney. i mainly use CZ120 leaded engravers brass. Most of the steel parts are stainless. Stavex, a heat treatable stainless for the pinions and 316 for the rest.

This is the next installment of the construction on the clock: http://www.my-time-machines.net/astro_03-17.htm It covers the construction of the thermometer. I do admire my client;s ability to take the progress photos I send him and turn them into a coherent article. The Moon dial mechanism is...

Terry, I have been thinking about you a lot the last while, Very pleased you are well and on the mend. Regards Deryck.

Kvom. we have based the design on as many of Harrison's principals as possible while remaining inside the design brief. lubrication is the prime problem when you come to long maintenance intervals. Mayhugh, I think i know what you mean, but, that wont be for a few more years, and, I am not...

This the the link to the progress made in February: http://www.my-time-machines.net/astro_02-17.htm I am making some progress with the moon dial. The photos will give you some idea of where I am at the moment but the website is much more detailed. You will also see this installment some of the...