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Thread: A rest day.
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26th June 2010, 10:08 PM #1Retired
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A rest day.
As stated in this thread the tool rests on the VB72 weren't desirable.
They were pattern makers rest and not suitable for my style of turning.
Pic of old rest. Too flat across the top.Attachment 140560
The bore size of the remote rest is 11/2" or 38mm.
My supplier only had 36mm solid rod, no 40mm to machine down for the posts.
I noticed that the original rests were also 36mm (maybe they had the same problem) so I locked one in and tried to move it. Nice and secure so 36mm it is.
The actual rest was going to be out of 75mm x 12mm flat bar as I have plenty of that for the tool rests on "Big Henry".
So with all the material it is time to start.
I wanted to make 4 rests from 100mm -400mm and settled on 100mm, 250mm, 300mm and 400mm.
400mm is the longest length on a 36mm single post that is acceptable before you get vibration at the ends.
The posts were cut at 250mm long so that the post was supported by the complete bore of the banjo at full working height.
The post is set up in the banjo ready for slotting.Attachment 140555
The cutout to take the rest is cut using a 1mm (like to meet the person that invented them) disc in an angle grinder.Attachment 140556
The placement of the tool rest on the post is important and one where a lot of manufacturers fall down.
The top edge must clear the banjo so that you can get it as close as you want without the timber striking the edge of the banjo that the post goes into.
To achieve this I use a square on a magnet. If you have 2 people a straight edge will do the same thing.Attachment 140558
Too far back. As you can see the banjo would hit the timber and the rest would be nearly an inch from the work.Attachment 140562
The rest in the right place.Attachment 140557
Now it is a matter of tacking it into place.Attachment 140559
With one tack square the rest to the post.Attachment 140563Note the centre mark (circled).
Second tack.Attachment 140561
Now weld right up. If using thinner material be careful that you don't overheat it or it will pull into a slight curve.Attachment 140564
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26th June 2010, 10:13 PM #2Retired
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A rest day
A good clean up
Attachment 140566
Check the distance of the rest from work in relation to banjo.Attachment 140567Attachment 140568
Success.
All rests present and accounted for.Attachment 140569
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26th June 2010, 10:17 PM #3
, I may have some 40 - 45 rod that you can bore a 36 hole through to sleeve the bore in the banjo. Another job for the new metal lathe , at this it'll pay fo itself in no time .
To grow old is inevitable.... To grow up is optional
Confidence, the feeling you have before you fully understand the situation.
What could possibly go wrong.
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26th June 2010, 10:36 PM #4Retired
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26th June 2010, 11:24 PM #5
And not the slightest hint of a mention that it's a damned good idea to file the working edge smooth after finishing?
I'm shocked at you, . Shocked, I say!
- Andy Mc
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27th June 2010, 12:20 AM #6Retired
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Saving that for a later date O night stalker.
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27th June 2010, 11:06 AM #7Retired
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Is that some nicely figured redgum attached to the VB 72????
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27th June 2010, 12:18 PM #8Retired
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Yessum.
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27th June 2010, 12:24 PM #9
Nicely done ...when are ya' planning on manufacturing them?
Cheers,
Ed
Do something that is stupid and fun today, then run like hell !!!
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27th June 2010, 12:28 PM #10SENIOR MEMBER
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.
Just a bit more refinement and they will look just like
(dare I say it),
a :Vicmarc toolrest.
(stiring, stiring).
Cheers
TimSome days I turns thisaway, somedays I turns thataway and other days I don't give a stuff so I don't turn at all.
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27th June 2010, 12:43 PM #11
Hey , did you ever do anything with that bit of Pink Birch you got off me about 5 years ago?
Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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27th June 2010, 12:44 PM #12Hewer of wood
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Another refinement might have been to weld some drill rod along the top of the rest, anticipating the pounding it's going to get at the hands of an axe wielding mongrel ;-}
Cheers, Ern
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27th June 2010, 02:50 PM #13SENIOR MEMBER
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27th June 2010, 03:05 PM #14Hewer of wood
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'Spect 's saved it to turn up some handles for the camlock levers ;-}
+1 to those 1mm thick cutting wheels.
I've cut 3/8 thick HSS with them to make custom scrapers. Blues the steel but only on the surface
What was the topic again? Oh yeah, how many kinds of light bulbs do turners work under?Cheers, Ern
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27th June 2010, 03:54 PM #15Retired
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