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The most recent discussions

Metric thread on an ML7

August 15, 2017, 11:29 am

This ought to be simple so I'm probably missing something. I'm trying to cut a 1.5mm thread on an ML7 with 8TPI lead screw. I have a 127 tooth gear but no 21 tooth. Duncan Munro's Ml7 Gear calcula... Read more »

Regretted having started :-(

August 12, 2017, 4:22 pm

Having yesterday sorted out my small hand tools drawer, and sorting like-minded tools into chinese take-away plastic containers found this afternoon that the drawer woould not open. After much cus... Read more »


August 9, 2017, 3:53 pm

I've only just heard of this, and, as my Meccano set (with some bits dating back to 1910) is getting all bent and rusty, does anyone have experience of this as a prototyping tool? I did dally with... Read more »

"Time" to cut it "Shortt"

August 9, 2017, 12:42 pm

On the basis that my latest book, Electrical Timekeeping by Frank Hope Jones (1943 reprint) has just arrived, might I suggest that any further discussion goes to email (mine is correct subject to ... Read more »

fao rickman

August 8, 2017, 3:37 pm

Since you asked, the Woodward account agrees with your assertion that the synchroniser on a hit acts to increase the force of gravity, although I think it would be better expressed by expressing th... Read more »


August 7, 2017, 9:50 am

Just looking at the mechanism in the master free pendulum, what happens if the two pendulums are PI out of phase, for this suggests that the light gravity link will drop on the wrong side of the m... Read more »

circular in pendulums / pendulae / penduli

August 5, 2017, 10:04 pm

Variation of frequency with amplitude ... http://www.bmumford.com/mset/courthouse/circular/index.html Read more »

Is it, or is it not, phase locking?

August 5, 2017, 12:51 pm

Comments have been that the Shortt clock is not a phase locked loop because of the infrequent checking but if you were to cast your mind back to the early days of PLLs in VHF rigs, typically the 1... Read more »

CMT - Cold Metal Welding?

August 2, 2017, 11:02 am

http://www.axson.se/pdf/fro_bro_CMT_eng.pdf Read more »

A mechanical phase locked loop!

  [ 2 3 4 ]
August 1, 2017, 11:00 am

Continuing my googling following last night's BHI lecture, and following up on the Shortt and Hope-jones clocks, here is a mechanical phase locked loop, and in Meccano! ... http://www.meccanotec.... Read more »

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The best rated discussions

WARCO customer service rating: 5

  [ 2 ]

Is this an oxymoron? A couple of weeks back I ordered some sanding discs and linisher belts from Warco. Neither item was flagged as out of stock and the transaction went through on my credit card. ... Read more »

Mastercam V9 users? rating: 5

Anyone here use mastercam version 9 ? Help needed with milling tool offsets if possible please. Cant seem to set them. Bob Read more »

Denford Orac CNC lathe rating: 5

  [ 2 ]

I have the chance to aquire and old Denford Orac CNC lathe. An information on its capabilities would be apreciated. Archi -- amcne --------------------------------------------------------------------... Read more »

Fitting VFD to BH600 lathe rating: 5

Hello all, I decided to break the bank and bought a NewtonTesla VFD system for the BH600. Has anyone else fitted one, and if so, where and how did you fit the control box, and do the connections into... Read more »

Hi, I'm looking to have the Flywheel magneto re-energised for my Villiers 9... rating: 5

Hi, I'm looking to have the Flywheel magneto re-energised for my Villiers 98cc 4F but I am unable to find a servicing company here in the UK, any help would be much appreciated. Launceston. Cornwall. Read more »

Sieg spares rating: 5

  [ 2 ]

The leadscrew nuts on my Sieg X0 mill's X-Y table are worn out and I can not find any for sale, not even from Arc Euro Trade who supplied the machine. Any suggestions chaps? Cliff Coggin. Read more »

Oil-cooled welders rating: 5

Hi folks, I'm pondering the question of whether I need a bigger welder. I currently have a Cytringan Bantam 180 A oil-cooled machine. It's almost identical to the more common Pickhill and Oxford Ba... Read more »

arboga pilllar drill rating: 5

hi am looking for information on the arboga e100s pillar drill, have searched the internet for a manual, or a service manual. hopefully somebody may have a copy i can borrow or buy for beer tokens !... Read more »

Kress router collet removal rating: 5

  [ 2 ]

A Kress woodworking router may seem off topic at first, but the subject is relevant. I am looking for ideas to ease the removal of the collet which jams in the holder so tightly that I have to tap it... Read more »

APE Microball Height Gauge rating: 5

I've just bought an APE Microball 12 Vernier Height Gauge. (Reads to 0.001 in 0.500 steps.) Does anyone know whether it's possible to adjust the zero setting ? Or is it always used in a difference ... Read more »

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