{"id":2292,"date":"2017-01-01T22:42:43","date_gmt":"2017-01-01T20:42:43","guid":{"rendered":"http:\/\/cnc.a-ueberbach.de\/?p=2292"},"modified":"2017-05-31T00:24:16","modified_gmt":"2017-05-30T22:24:16","slug":"werkzeug-cazeneuve-hbx360-teil-3","status":"publish","type":"post","link":"https:\/\/cnc.a-ueberbach.de\/en\/werkzeug\/cazeneuve\/werkzeug-cazeneuve-hbx360-teil-3\/","title":{"rendered":"Cazeneuve HBX360 (Part 3)"},"content":{"rendered":"

The quest of restoring a 40 year old HBX360 lathe continues..<\/p>\n

Previously on this blog… Part 1<\/a>, Part 2<\/a>
\nStay updated with Part 4<\/a><\/p>\n[toc]\n

Electronics<\/h2>\n

To speed up the restoration we have decided not to touch the switch board (yet). Automatic circruit breakers and proper motor protection switches would be a great improvement. But before we embark on that journey the mechanical part and paint job needs to be tackled.<\/p>\n

Well, mostly true…<\/p>\n

Cabling<\/h3>\n

Most of the cables have suffered a lot during 40 years of service. We will replace them, add some cable end sleeves and cable pipes.<\/p>\n

Control panel<\/h3>\n

The newer HBX360 version have a small control panel at the front. Our version comes without. Therefore we have decided to put together something very basic by our own.<\/p>\n

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Now we only need to find a proper position. We have not decided yet but for sure we need to avoid reaching over the work piece for operation.<\/p>\n

Paint job<\/h2>\n

Stripping<\/h3>\n

All generally available paint strippers we tested did not really work well on the rigid 2 component paint used on the machine. After chlorcarbon had been banned from paint strippers another (equally strong) solution was needed…<\/p>\n

The internet was again source for this solution. After some testing we have found the following mix to work well:<\/p>\n

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  • 2\/4 Formic acid (75%)<\/li>\n
  • 1\/4 Acetone<\/li>\n
  • 1\/4 Nitro paint thinner<\/li>\n<\/ul>\n

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    Bad packaging. 5 liters of 75% Formic acid without any secondary packing… I was honestly surprised that this package was accepted for transport at all.<\/p>\n

    Danger, formic acid, acetone and nitro paint thinner are highly flammable and bad for eyes and lungs. It is necessary to take appropriate protection measures.<\/p><\/div>\n

    To avoid fast evaporation of the stripping solution the metal needs to be covered with clutch foil. Still good ventilation is required at the workplace.<\/p>\n

    Chemical pain stripping is a great alternative for old machines compared to the physical removal. Some 40 years ago when this machine was built most paints contained a fair amount of lead. Blasting with sand, dry ice or scrubbing with a steel brush causes a lot of dust which is cumbersome to dispose. Transporting the machine parts to a professional site was not an option either – at more than 1,2 tons this will not come cheap.<\/p>\n

    Paint job<\/h3>\n

    My girlfriend also wanted to contribute to the project and took over some of the painting. The result turned out to be really great – especially on the side panel and door. Both parts which will be well visible later on.<\/p>\n

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    The remaining parts will have to wait a few weeks till end of January. As some spare parts are jet to arrive and some others are waiting for rework we cannot put together the machine anyways.<\/p>\n

    Assembly<\/h2>\n

    Slowly we can think about re-assembly. At least for some components of the lathe.<\/p>\n

    We start with the tail stock assembly. It has already been painted, all parts are clean and have been thoroughly inspected.<\/p>\n

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    After about one hour (and some rework) the tail stock looks almost brand new again.<\/p>\n

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    Before and after. The main drive motor.<\/p>\n\n\t\t