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14th Feb 2021, 06:14 PM #16Most Valued Member
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Bill how about 63mm hollow bar, https://www.voestalpine.com/highperformancemetals/australia/app/uploads/sites/72/2018/03/750-Hollow-Bar-Wall-Chart.pdf
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14th Feb 2021, 07:16 PM #17Senior Member
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- Jul 2007
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- Perth
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Bill,
Column diameter average 63.45mm minimum measurement was 63.37mm.
Alan
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14th Feb 2021, 11:39 PM #18Golden Member
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14th Feb 2021, 11:48 PM #19Golden Member
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Last edited by WCD; 15th Feb 2021 at 08:41 AM. Reason: fixed mistake flagged by pipeclay
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15th Feb 2021, 12:03 AM #20Most Valued Member
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You want to adjust that calculation.
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15th Feb 2021, 08:30 AM #21Golden Member
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Thanks for noticing that glitch pipeclay
- it's now fixed
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16th Feb 2021, 10:10 AM #22.
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Bill,
Waldown used the same 2 1/2" diameter column, albeit hollow, on their 8SN and Workmax drills. They may still have columns available as spare parts.
I am using a Waldown column on my bench model Tough simply because it is lighter and might facilitate easier transport of the drill down the track when I give the drill to my daughter.
Tough pedestal drills are unstable unless bolted to the floor. Unlike the generously proportioned Waldown base, the Tough pedestal base has a small footprint and the bench drill, even smaller. I have not looked at the underside of a Tough pedestal base but they removed most of the support ribbing from the casting of the bench base towards the end of production. Probably not an issue with your intended conversion but maybe something to be aware of.
IMG_20200627_142819020.jpg
A Waldown table support collar from an 8SN with a Tough-ish 316 lever replacement. Alan's collar works just as effectively.
IMG_20210205_142937816.jpg IMG_20210205_143025870.jpg
Bob.
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16th Feb 2021, 03:21 PM #23Most Valued Member
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- Mar 2011
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This thread has me wondering whether I should convert mine from a pedestal to a bench mount so I can put some extra storage under it....
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16th Feb 2021, 06:47 PM #24
My steel cabinet came from the Old Ferrybridge Iron foundry when it shut down. It is about 30 inches square and 39 inches tall with two substantial pressed steel shelves that can be adjusted for height. The side walls have ladder strips with slots in them to secure little steel tabs that hook in for the shelves rest on. The door has a three point locking mechanism that pushes a bar into slots at the top and bottom of the door. Its also hinged all the way from top to bottom. Mine is probably getting on for 40 years old, I've had it for at least 12 or 13 years.
Best Regards:
Baron J.
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16th Feb 2021, 11:11 PM #25Golden Member
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Thanks Bob,
Interesting that Waldown used the same diameter column, and I will follow up on the possibility of a spare. 2 1/2 inches seems to have been a common column size: at work today I checked the Drilmore drill press (made in Sydney but not well known I suspect) and it also has a 2 1/2 inch column.
If it's not a trouble I would be interested to know the ID of the Waldown column because in case of other options not working out I have started looking into 65 mm hollow bar as a starting point, and there is a range of ID sizes on offer.
The small size of my Tough drill base casting is a concern for a taller drill press and if reworked as a pedestal drill I plan to bolt the base down onto a larger rectangular base piece. I think mine is a late model - it was bought new around '73-4 and has a cast aluminium hinged belt guard - and the underside if the base is very similar to your photo.
Cheers, Bill
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16th Feb 2021, 11:25 PM #26Golden Member
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That should be a straightforward conversion... or a swap? But don't let me give you ideas.
I should admit that assuming I get the Tough converted to pedestal, the first thing I will do is to take the little set of shelves that it sits on now and add wheels, so when I don't need lots of Z for drilling - and that's most of the time -I can wheel the shelf over the drill base for a bit more floorspace. Admitted I will need to make the slelves a bit shallower front to back so it sits in front of the column, but it's too deep anyway.
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17th Feb 2021, 10:04 AM #27.
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Biil,
The Waldown column has on OD of 2.4985" and a bore of 2.045".
Something I had overlooked when I made the Waldown suggestion was that Waldown pedestal drills have a cast column support affixed to the base. A Waldown column would be too short to be of any practical use on the Tough.
Screenshot 2021-02-17 065239.jpg
(Image courtesy Eric ' Lamestllama' )
Back when I acquired my first Tough ( the same as Alan's ) I purchased a length of 2 1/2" PG 4140 from Interlloy here in Perth for $100 to replace the original battered bench drill column. Undoubtedly prices have risen but a solid bar may prove the easiest and in the long run, most economical solution.
Bob.
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17th Feb 2021, 04:09 PM #28Golden Member
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- Sydney
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Many thanks Bob,
Your post is very helpful, not to mention the spiffy Waldown drawings.
65mm OD x 50mm ID hollow bar would cost me around $150 for the length I need, but I have not yet found someone to machine it to size - costs for that may yet deter me.
I really would like a hollow column, but speaking of solid bar options I did see that 2.5 inch precision ground bar, chrome plated, is available - for hydraulic cylinder rods I expect. Have not yet checked the price.
Turns out the Drilmore I mentioned also has a rather shortish column mounted on a tubular base casting.
Cheers,
Bill
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18th Feb 2021, 12:34 PM #29.
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Bill,
You mention that your drill was purchased new around 1973-74. Does the head cast have one or two bolts securing it to the column? Mine has a single fixing and I assume the drill is a late model, economised to combat the invasion of cheap Taiwanese machines being imported during the Seventies and Eighties. The absence of ribbing in the base of yours suggests cost cutting measures may have been in place even earlier than I thought.
Bob.
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18th Feb 2021, 03:57 PM #30Golden Member
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- Dec 2011
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- Sydney
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- 505
The head is clamped with two bolts Bob.
One thing that seems odd to me is that the head carries a dealer's plate (Demco in my case) but no maker's plate. Are they all like that?
Bill
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