replaning lathe beds

Nov 16, 2003 6 Replies

I wrote a long post about replaning lathe beds and then I don't know what happenned to it. If it went out it went out with the wrong email address it should be dot com, not dot net. I was trying to edit when it went.



I have an opportunity to purchase a planer which the owner has used to replane several lathe beds for me. It is mint, and very accurate. He was charging me $300 to replane a lathe bed and scrape the saddle to bear. I told him I would mention this service here and he said he wasn't interested. He rebuilds Bridgeports and gets $5,000 each. There is a man in the building who has a grinding service. He has about 1/3 idle time. The idea is to buy the machinery and have the seller teach him how to do this and provide quality control for a while. Question is: Is there a market out there for replaning lathes such as 9" and 10" South Bend, Logan, Atlas, etc. (planer has a 6' stroke) service would include scraping the saddle to bear, and also could include the ancillary machining tasks to bring the apron back into battery. I know South Bend used to charge about $800 for this, but that is more than most people want to put into a used lathe. I was happy to pay $300 to get this done. I would appreciate any input on this. My real email addres is paulhagen at insight bb dot com.


Knowing where a service such as this is located is such a helpful piece of information. To me paying 300.00 isn't that bad but if you spend 150.00 to

200.00 on shipping on top of that its not worth it unless you really have a high dollar lathe. I contacted some folks in the cincinnati area about a year ago and prices for a Rockwell lathe bed (regrinding) started at about 250.00. I know a guy locally to me that has a planner that will do at least an 8' lathe bed maybe more but then you are stuck rescraping everything. With grinding I am told its a finished job when you get it done.

tim

I approached South Bend a number of years ago about this, and had an interesting conversation with a customer service type. Their approach was to save up lathe beds until they had enough to make it worth their time to set up the grinder for the bed profile. Then they would dress a single stone with the entire shape of the bed across the stone. When they ground a bed with this setup, all surfaces would default to parallel, and be as straight as the bed on the grinder.

It sounded like an absolutely fabulous way to get a straight,parallel bed. I cannot imagine getting that kind of accuracy out of a planer with the operator having to mess around with the knobs to get each surface on the bed at the right angle and spacing.

Brownnsharp

i have used a planer to do lathe bed and bridgeport tables. we removed the planer clapper and mounted grinding heads. we have done several 100 or 1000 bp table and ways with perfect reading. i just do not feel it is worth the work for just one small machine like 9sb. when we do the tables it is four or more unless we have a customer request that does not want an exchange.

I understand that the people who really rebuilding machines consider planing small lathe beds to be nuisance work. My idea would be set up an operation to specialize in it at reasonable rates. The questions which I need to answer are: What is the demand, and what are reasonable rates. Incidentally, a planed bed does not need scraped. It is usually spotted for looks and to hold oil. The only thing which needs scraped is the saddle and that is a simple job. I think it would be necesary to provide saddle scraping as part of the service. A hardened bed can not be planed. My friend would be doing this in his slack time, so he wouldn't need to charge as much as a busy rebuild shop. There are millions of those small lathes out there, but, again, what is the demand and what is a fair price? Paul

i gues you need to figure an hourly rate that you are happy with. then set up a time frame. we charge from $300 to several thousand depending on setup time. can you move the bed around with out help or do you need a hoist. everybed will have a different price. the demand; there are tons of sb lathe that need help, but there is a bunch that are fine selling for cheap. we sold a job,reground and scraped and turcite 9" sb for $1500 that same week i bought one with every tooling sb made for 9" that held perfect tolerences and still had the original markings on the ways $700. if you are good people will come. the other thing is that a mid size althe will take a few hours. we spend a lot of time doing set up we indicate off of different areas that are known to be good. what do you think so far.

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