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Thread: Filling dings
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23rd Dec 2016, 11:43 AM #1
Filling dings
What is the preferred product for filling in 'dings ' in beds and tables ? I've seen JB weld mentioned and liquid steel . Also the knead together stuff ?
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23rd Dec 2016, 02:02 PM #2Pink 10EE owner
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A stone and fill the dings with oil works OK. Unless you are doing a full rebuild.
Gold, the colour of choice for the discerning person.
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23rd Dec 2016, 03:31 PM #3Most Valued Member
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Agree. Make sure there are no raised edges and then ignore the dings.
If you want a precision, brand new, unmarked machine table/surface, buy a new machine and never use it. The person who buys it at your estate sale will thank you, but meanwhile, you might as well not bother owning it (unless you're a collector and just like to boat about your toys).
OTOH if the previous owner used the table as an anvil - you knew that when you bought it, so you should have already had a plan to address the problem. Devcon isn't a plan.
PDW
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24th Dec 2016, 10:24 AM #4Most Valued Member
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Agree with the above, carefully stone it down, and if you did it yourself you've probably had enough words to say about it at the time, none of which can be printed here. Put it down to experience and move on.
For a bed I'd very carefully stone the burr down and generally leave it alone. Don't fill it with anything as, unless it's complete chop suey, it won't affect the function. There will still be plenty of material around it to bear on.
For a table it will depend on the damage and the machine. You could have it surface ground if the damage is light and you just want it pristine. You could fill the holes with JB weld or similar and make it look like a table filled with bog. Bog that will likely fall out again given most people's use of it, and will be soft so attract grit. You could drill out the holes and press in plugs. That's probably the ideal repair and done with skill will result in a repair about as good as it can get. However is really only an option for the occasional hole. I've seen drill tables that were literally disgusting, they looked like nobody had ever used anything under the material when drilling. Literally. The tables looked like the surface of the moon with a giant impact crater in the centre. In cases like that you could bore out the centre and press/loctite in an insert and then grind or scrape it flat. Especially scraping cast iron, you won't be able to see the repair. But they are all relatively serious repairs.
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24th Dec 2016, 02:26 PM #5
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24th Dec 2016, 03:22 PM #6Most Valued Member
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What are you calling a ding?
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24th Dec 2016, 03:29 PM #7Most Valued Member
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As in a lot of requests for help on something, pictures tell a thousand words. So, if we had a few pics, we would be able to give a lot better information. I've a few scrap blocks of cast, if it's that bad.
KrynTo grow old is mandatory, growing up is optional.
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24th Dec 2016, 05:06 PM #8China
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Devcon
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24th Dec 2016, 07:03 PM #9Golden Member
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if it's purely for aesthetics maybe fill the dings with molten antimony lead and scrape flat?
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24th Dec 2016, 10:48 PM #10
Yes Sb and some As makes a nice hard lead, tad of copper and silver also helps to make a hard lead... just like the bullion we get from the blast furnace at work , this lead will bend a little then snap/break.
We use this kind of blend to patch chipped concrete in our crane landing bays and out on the final products logistics bays, gets driven on by forklifts constantly(up to 25T) so its pretty tough but you could dent it with an impact from a heavy sharp object....................................................................
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25th Dec 2016, 10:52 AM #11Most Valued Member
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As others have said, stone it flat so there are no parts that are proud of the precision surface. The small dent will likely reduce your contact area by an unnoticable amount. Filling it with any of those puttys (JB etc) will not contribute to the contact surface and so will be a phsycological repair at best.
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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25th Dec 2016, 06:36 PM #12
pic
A ding or two in my old Holbrook T13 lathe bed ding.jpg, directly underneath the chuck . Probably the chuck was dropped more than once It look horrible .
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25th Dec 2016, 11:06 PM #13Most Valued Member
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Don't worry about them, they are on the tailstock ways and won't affect function. If you want pristine ways, buy a new lathe and wait until you put some in yourself!
If it really bothers you, make up a way cover so WHEN you crash the lathe or drop something on the ways, you won't damage the ways and don't have to look at those who have gone before you.
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