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Old 04-13-2011, 03:19 PM   #1
yankov@rggroup.info
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Default Hardinge HLV-H Restoring

Hello, firs I want to apologies to every one reading this post, for eventual mistakes in my english, as it is not my native language.
I am about to start Hardinge HLV-H restoring. I decided to post my progress for few reasons. First Hardinge is probably the best lathe to bay as second hand machine, second these lathes are becoming more and more available to model engineers. Unfortunately machines that apear on second hand market are 20-30 year old. Some of them are in great tolerance holding condition but cosmetically look very bad. My harding is produced around 1980 and holds near factory cutting tolerances. Here is the machine in all it`s glory.



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Old 04-13-2011, 05:02 PM   #2
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Default Re: Hardinge HLV-H Restoring

Welcome to the forum Yankov. You are lucky to have such a nice lathe to restore. I had the pleasure of running a
brand new HLV-H about 20 years ago. They are sweet and I will follow this rebuild with much interest.
Don't worry about your english as my knowledge of any other language is non existent.



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Old 04-14-2011, 07:43 AM   #3
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Default Hardinge HLV-H Restoring

First to go under the knife is the tail stock. As it can be seen from pictures it is in a bad shape, at some places paint is missing to the point where bare metal shows. This condition is probably because of a very aggressive cutting fluid.

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Old 04-14-2011, 09:14 AM   #4
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Default Re: Hardinge HLV-H Restoring

HI I served my time with them lathes screw cutting on them was a dream can't Waite to see it back OT all its Glory

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Old 04-14-2011, 09:24 AM   #5
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Default Re: Hardinge HLV-H Restoring

Plan for the tail stock is as follows:
1. Strip the paint to the point where only filler and primer are left. It is possible to strip also the filler to bare metal but this is not really necessary as filler is very firmly attached to the metal. Stripping is done with ABT paint remover, expensive stuff, but it dose the job perfectly. I made some experiments, to figure out how long striper should stay applied to dissolve only the paint, 2-3 minutes is the answer. After this I jut wipe it with a clean towel and wash it with water. I did not take any pictures of this process as I forgot the camera. My bad.
2. Fill all the nik`s and dings whit polyester filler. This stuff is used on car body repair. It sands very easy with 120-200 sand paper.

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Old 04-14-2011, 10:08 AM   #6
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Default Re: Hardinge HLV-H Restoring

Hi, I changed my name from Yankov to engine man.
Just for information

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Old 04-14-2011, 12:55 PM   #7
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Default Re: Hardinge HLV-H Restoring

BTDT Mine's 50 years old this year.

(http://www.mycncuk.com/forums/showth...Hardinge-HLV-H)

They are a fabulous lathe both in looks and performance; well worth all the work.

One warning: careful with the paint stripper: in can soak into the cast iron and then leach out later, ruining the new paint. Clean it off carefully after use.

Looking forward to seeing the work progress so keep posting the photos.

Regards,

Bill

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Old 04-14-2011, 03:29 PM   #8
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Default Re: Hardinge HLV-H Restoring

Thank you for the advice. Paint stripper that i am using is water base
So i just washed it. So far no problem whit it.

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Old 04-14-2011, 05:21 PM   #9
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Default Re: Hardinge HLV-H Restoring

I worked for Hardinge many years ago. Nice to see these old beasts restored.

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Old 04-14-2011, 07:56 PM   #10
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Default Re: Hardinge HLV-H Restoring

Thank you all for your support. I don't know how long this project is going to take but I am determined to finish it.
BillTodd you did outstanding job with your machine. I hope you will provide me with some advice on difficult points during this rebuild.
Now third thing that I managed to do on the tail stock: I sprayed on some epoxy filler made by the company named SELEMIX. Here are the pictures. One picture worth a thousand words!



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