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Member Videos / Metal Lathe Centering Roller Tool for chucked item
« Last post by Jim Dobson on Today at 02:42:20 AM »
Metal Lathe Centering Roller Tool for chucked item

A simple idea how I quickly center up small pieces of offcuts. Not saying this is how anyone else should do it, but it works accurately for most of the work that I do. It doesn't replace your Mitutoyo dial indicator for super accurate work, but as I say in the video its quick and easy.
Hope it helps someone out.

Member Videos / The Worlds Smallest Stirling Engine
« Last post by Jim Dobson on June 20, 2024, 02:53:54 AM »
The Worlds Smallest Stirling Engine

Now I don't know whether to mod this and put it on a wooden plinth or just leave it alone?

Member Videos / Modified PM Research #7 Steam Engine & MSM 4" Copper Boiler
« Last post by Jim Dobson on June 17, 2024, 12:51:55 AM »
Modified PM Research #7 Steam Engine  & MSM 4" Copper Boiler
I've really enjoyed this project doing some mods to this engine

Member Videos / Re: My week this week, my workshop videos!
« Last post by hermetic on June 15, 2024, 11:01:59 AM »
Hi folks,
I get the gas forge up on its stand, change the gas burner orientation to make it more compact, and get it running in order to heat and flat bend some strip steel. Then I get the new boiler flue fitted and fit a new thermostat so it will self regulate and shut down if it gets too hot! Looking at the weather I might need it! Time to test it soon!!
Phil, splish splashing through the EastYorkshire monsoon!
Tools / Re: Any YAG laser experts here ?
« Last post by BillTodd on June 15, 2024, 09:10:23 AM »
someone with laser expertise has stepped up from the EEVblog.  Hopefully, it'll have a new home soon  :D

Member Videos / Re: Homemade Steam Engine & Gold Stamper
« Last post by Jim Dobson on June 12, 2024, 07:13:10 PM »
A lot of these industries have gone the way of the wooden bucket maker.
My family was in the tanning business and had a tannery that went for 132 years before finally closing.
Member Videos / Re: Homemade Steam Engine & Gold Stamper
« Last post by SwarfnStuff on June 12, 2024, 03:15:43 AM »
Yeah Jim, Really really loud BUT the 140Db is just my guess. I do know that the dye-house open steam sparge pipes that heated the die-bath was 85Db at some point during the heating phase.

If you think of a kettle heating you might recall the change in tone / volume changes closer to the boil. Well, our "kettles" held 1000kg of wool and about 3000 litre of water.

We could gauge from the sound when to throttle the steam back to prevent an over enthusiastic boil. Later, instrumental control took over the by guess heating cycle.
I'm now waffling, but the looms were much much louder.
End waffle,
John B
Member Videos / Re: Homemade Steam Engine & Gold Stamper
« Last post by Jim Dobson on June 11, 2024, 06:43:07 PM »
140Db....jeez that's like having your ears next to a rifle barrel all day long!
Member Videos / Re: Homemade Steam Engine & Gold Stamper
« Last post by SwarfnStuff on June 11, 2024, 03:23:07 AM »
True about the hearing loss.
I worked in textiles as a dyer. One mill I was at was a vertical one. Scouring, carding, spinning weaving dyeing etc to the finished article.
A visit to the weaving room with the old Dob-cross looms where I think the noise was near the 140Db.
Loom operators basically were really good at lip reading as the shuttles were belted back and forth across the loom crashing into the thingies (Technical term  :Doh:) that caught them before flinging them back to the other side.
I reckon the stampers would be WAY higher given we could hear them thumping from home, a mile or so away.
Cheers,John B
Member Videos / Re: Homemade Steam Engine & Gold Stamper
« Last post by Jim Dobson on June 10, 2024, 06:10:38 PM »
Thanks for showing, Memory lane activated as I grew up not far from mines and stampers. (Near Bendigo central Victoria Australia.)

We knew them as batterys, guess because the really battered the rocks into fine sand.

I cannot remember seeing them working up close but the noise level was horrendous.

Big memory was sitting out front of Grandma's house watching the bailing buckets going up and down just across the road. The water ran down an open drain and I recall very smelly.

Nice model to see running. Multiply the noise of the stampers by (LOTS) to imagine the real things.
John B

Thanks John, I've always enjoyed looking at these relics on travels through Oz.
I certainly think that the operators would have suffered hearing loss in a very short amount of time.
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