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Member postings for Ed Duffner

Here is a list of all the postings Ed Duffner has made in our forums. Click on a thread name to jump to the thread.

Thread: why does my makita go pop occasionally ?
17/01/2020 17:59:29

Hi Gerry,

According to the 'old' Makita service software, the capacitor part number listed for the NHP1300S is 645011-4. It shows up as "End of sales" on the new Makita parts ordering website. End of sales can mean obsolete or out of stock.


16/01/2020 18:35:55

Hi Gerry,

The part might still be available from Makita or even an update to the switch and wiring, which Makita sometimes provide in the service bulletins. If you are in th UK and can provide the drill model number I could check on the Makita systems at work tomorrow(friday) if you like.

Just as a matter of interest, different countries sometimes have different switch and supression requirements for some of the Makita power tools.


Thread: lathe cutting fluid.
05/01/2020 16:12:58


I used a lot of tallow and trefolex during my time as an electrican. I think also as a cutting aid for drilling with a holesaw but it smoked quite a bit and would probably be the same on a lathe and mill. There would also be some difficulty adding tallow to a rotating work-piece.

Tallow was always hard going when threading by hand until the workpiece got warm.


Thread: Cast Iron Watch Case
04/01/2020 16:30:01

Anodised aluminium, exotic hardwoods, animal horn perhaps. Maybee even some ordinary aluminium with an inlay of another material - e.g. abelone against the wearer's skin ??? What about plastics? Delrin, 3D printed resin or powder deposit, not sure what it's called.

The possibilities seem endless


Thread: Archiving old data
26/12/2019 11:47:11

I still use floppy disks on my Amiga computers. yes

For the virii I would get rid of them, just my honest opinion. I'm sure there are copies of them archived at the companies who write software to tackle those. ...and I doubt you'd be unable to store them in the cloud (a remote disk somewhere on the internet) because of the risk and possible breach of usage agreements.

At HP our DAT tape backups were only guaranteed for 7 years by our IT Dept..

You could use an optical disk, but I've had a heck of a job getting my Blu-ray DVD writers to read disks on windows 10, but are ok on Windows 7. I have to go into device manager, disable the drive, then re-enable it so the OS can then read from it.

USB Thumb drives could also be an alternative but how long will the interface connector be available into the future?


Thread: Merry Christmas Everybody!
25/12/2019 12:31:05

Merry Christmas everyone.


Thread: Broken Taps
22/12/2019 15:00:17

According to the second chart on this page a 2.2mm drill would give 50% thread and appears to be ok for steel, stainless and iron.

Perhaps a change to a spiral flute or spiral point tap could help? depending if these are 'through' or 'blind' holes.


Thread: Lathe annoying 50Hz hum
01/12/2019 14:06:38

On my Warco WM-16 mill I would often hear high pitched squealing coming from the motor housing when running at certain speeds, which I believe was a resonant frequency between the housing sheet metal and milling head.

To eliminate it I lined the housing with a self adhesive, sound dampening sheet used for computer cases.

Here is an example of the sheet, but I believe I purchased mine elsewhere.

Akasa Noise Reduction Mat.


Thread: Mystery wiring on a small DC motor
21/11/2019 18:39:24

Hi Michael,

The motor itself appears to be just a simple dc motor used in toys etc, from online spec's.

Could the link wire actually be a sleeved, tiny coil, noise supressor and the 'other' connector is perhaps normally connected to, or in contact with a metal chassis of the player?


Thread: Web Hosting
18/11/2019 18:41:46

I have built and occasioanly maintain the web site for my brothers tool hire shop, using MySql and PHP. It's hosted with "Unlimited Web Hosting". They have given us good customer support when needed, which thankfully has not been very often.


Thread: General Question
15/09/2019 11:30:22

If you happen to have a tracking number it should be possible to see where the missing items are.

I recently bought an old camera lens from Japan. With tracking, I could see it took 3 to 4 days to get to England, then a further 2 weeks to get through customs.


Thread: Blown Fuse
14/08/2019 18:12:14

Was the machining being done dry, without coolant or lube?

One of the forum members here has previously commented about the build up of aluminium dust on a bench sander which ignited when he later held a ferrous metal to the sander without cleaning off the aluminium dust.

I wonder what size aluminium has to be reduced to and at what temperature it becomes ignitable?

Edited By Ed Duffner on 14/08/2019 18:13:00

Thread: WM16B mill
07/08/2019 18:25:16

I have the Warco WM-16 and use a Vertex 100mm vise for most of the stuff I'm doing at the moment. I originally fitted one of the small display type of DRO to the machine from ARC Eurotrade. The X scale was screwed to the front of the table on 20mm deep mounts and the scale would often hit the Y-axis winding wheel.

I've since fitted an Easson ES12B with magnetic scales from M-DRO and the X-scale is mounted to the rear of the table. So far I've not been in a situation where the table has needed to be wound back far enough to cause a problem. It really depends on what you intend to machine and how big the initial part is.


Thread: Things to Come
02/08/2019 22:46:40

A few weeks back, I was looking at Neil's post on this forum about his Trace Elliot guitar amp and later went to Ebay to look for tools. On the front page of Ebay was a whole load of Trace Elliot amps for sale.

They say it's to help us, but ultimately it's google making even more money.

Thread: Q: Print Nozzle Hole Shape?
31/07/2019 22:37:38

Jeff, thanks for the info. Seems strange the nozzle would split out unless they were thin-walled.

Versaboss, Indeed I thought of that too, but if the nozzle had outer edges which were made square to the inner, then setup could be achieved.


31/07/2019 21:46:13

Hi guys,

I'm looking at getting a 3D printer, not sure which one or type yet. However, whilst looking at the various tests and reviews online, a thought crossed my mind regarding print quality on filament deposition (FDM) printers.

Why do the print nozzles on FDM printers have a round hole? Why not a square hole? Wouldn't a square hole lay down a flatter sided filament? and subsequent layers create a better/flatter side surface?

With todays' manufacturing abilities, a square hole should be relatively easy to accomplish.


Thread: Guess the Chemical?
28/07/2019 01:45:00

nitrocellulose lacquer?


Thread: Aldi bargain laser level
19/07/2019 00:40:29

I bought one of these laser levels from B&Q many years ago for about £30. I think I've used it twice so far. For finding levels in the garden to add a railway sleeper, low retaining wall and to check and level the ceiling timbers in my living room when I knocked the hall through. I was surprised to find the timbers had a difference of as much as 7/8" or ~22mm lowest to highest point. !!!

I find levelling the base of the tool to be a bit tedious.


Thread: Angle grinders - Dangerous or not
19/07/2019 00:21:45

We had a customer come into the shop a couple of months back, asking for a 9-inch TCT wood cutting blade and non-standard step-washer / bush.

Not immediately obvious what he was looking to do, but after a chat he basically wanted to fit the blade onto his angle grinder to cut out a tree stump. He was politely sent on his way after being advised of the potential danger.


Thread: Mains outlets with USB sockets - safety?
05/07/2019 23:04:13

If you buy any electrical equipment in the UK, always make sure it carries the British Standard kite mark. In my past Electrician experience MK always had a premium price but it is good stuff, along wth Crabtree.

For charging I tend to read and follow the instructions for the particular device itself.


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