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8th June 2012, 10:43 PM #1.
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Drill Table Repair ( or using GQ's scraping as camouflage )
The table Gregory brought me last Sunday had 3 drill holes in the work surface. One 1/4" , one 2.5mm and a mess roughly in the centre where a number of mistakes had finally created a through hole. A neat through hole is very handy, specially with the over centre clamp I have on the drill.
I bored out the hole to remove all evidence of damage. I then discovered that Waldown did not position the cast boss directly on the spindle centreline so I have an offset hole. It is big enough to accommodate a 3/4" drill without contact.
I thought that I would have a go at plugging the two remaining holes with some cast iron. I turned up a couple of 0.001" oversize plugs from a 4E offcut. I had redrilled the holes in the table to ensure that the hole edges were sharp and after turning a 15 degree bevel on the plugs, drove them into the table. I had wiped a thin coating of Loctite around the walls of the holes prior to insertion. I peened the edges of the plugs then scraped them flush.
An easy enough job.
The 4E is slightly lighter in colour than Waldown's cast iron. I reckon I can live with that.
BT
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8th June 2012 10:43 PM # ADSGoogle Adsense Advertisement
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8th June 2012, 10:54 PM #2Philomath in training
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Nice one Bob
Michael
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8th June 2012, 10:58 PM #3SENIOR MEMBER
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I am suitably impressed Bob. Fantastic job
Phil
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8th June 2012, 11:04 PM #4.
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9th June 2012, 01:09 AM #5
Nice job Bob
I would think if you took a piece of cheap Chinese cast it would just break when peening, but it amazes me sometimes how malleable cast iron can be. A bit of work on the drill and you'll never see the colour difference.1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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9th June 2012, 01:30 AM #6GOLD MEMBER
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Hi BT,
I thought I replied to this earlier but it seems to have gone astray.
Is this the plug of the first repair?
A little flight rust and you'd never know it was there
Great work as always Bob.
StuartLast edited by Stustoys; 9th June 2012 at 09:59 AM. Reason: spelling
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9th June 2012, 09:46 AM #7Distracted Member
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Another vote for 'well done Bob'.
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9th June 2012, 10:50 AM #8Senior Member
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Good repair there, unfortunately now that Stustoys has enlarged that pic you'll have to go back and repair, that once tiny hole to the left, which is now a giant
Cheers.If I'm not right, then I'm wrong, I'll just go bend some more bananas.
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9th June 2012, 10:51 AM #9.
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I think so Stu. There is a slightly different coloured concentric edge between 4 and 6 o'clock inboard of your red circle.
I posted these photos to show how easy it is to repair a few nasty drill holes. Sadly, a lot of drill press tables are the victims of careless abuse and while the "new" table on my drill looks like it has served as an anvil, it only had minimal drill damage.GQ's Biaxed surface made the concealment of the repairs simple.
The table on my other Waldown has been fly cut. It would be difficult to plug and conceal a hole in it. On the other hand, both of my mills have smooth(ish) shiny tables as do a lot of other mills. Executing the repair of an errant hole would not be too difficult as long as the finishing was done with a delicate hand. Colour matching the cast iron would tend to be a luck of the draw thing.
Still, to me, an honest visible repair is better than no repair.
BT
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9th June 2012, 11:00 AM #10.
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9th June 2012, 11:10 AM #11GOLD MEMBER
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Hi BT,
I doubt I would have found it if I didnt have the small hole to go off. I only had to enlarge it 400% and even then the first circle I had drawn was in spot at about at around 1 o'clock from the small hole but I figured it was to small.
Next guy that walks into your shop that hasnt seen the pictures, ask him if he can see anything.
an honest "barely" visible repair (still pictures can be tricky things)
Stuart
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9th June 2012, 02:43 PM #12SENIOR MEMBER
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9th June 2012, 03:04 PM #13Distracted Member
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Yeah, we're always saying that. That Anorak, he's so slack. Never does anything properly.
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9th June 2012, 03:35 PM #14SENIOR MEMBER
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9th June 2012, 04:46 PM #15.
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Loctite
Ne'er a bottle of the stuff would be seen at Sovereign Hill.
It would have been smeared off the mating surfaces in the table when I belted the pins in. I know you are winding me up but the stuff does come in handy. Held a few of my motorbikes together when I was a young bloke.
BT
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