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Member postings for Michael Cox 1

Here is a list of all the postings Michael Cox 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: How do I Calculate Pulley Diameter for Timing Belts
23/05/2020 16:12:27

Hi Neil,

You can look up the outside diameter of standard pulleys in manufacturers literature, see for example:

**LINK**.

When I have machined timing belt pulleys I use the given outside dimension for the number of teeth and then cut the grooves to give the require angular pitch.

Should be possible to use the same method to 3D drawing and then print.

Mike

Thread: Rotary Table Chucks
18/05/2020 16:09:37

The most useful chuck I use on my rotary table is an ER32 collet chuck on an MT2 morse taper. This also fits into my lathe using an MT2 to MT3 adaptor. THis is especially useful for gear cutting because you can turn a part to size on the lathe and transfer to the rotary table with no loss of concentricity.

Mike

Thread: CMD10/SeigX1 query
03/05/2020 17:03:26

I made a lever to clamp the quill that does away with the need for a hex key, see:

**LINK**

Thread: DIAMIND DISC
27/04/2020 20:44:34

I am, I believe, the author of the author of the article you are searching for. It was entitled " Re-purposing on old bench grinder" and I think It was published during 2016.There was also a follow up article published a little later entitled "Further modifications to an old bench grinder", I have spent a good part of the day unsuccessfully trying to find my copy of the article in order to give you an exact reference to the articles. I am also having trouble viewing the MEW digital archive so this provided no help.

There is a short write up of the project on my website, see:

**LINK**

If I can be of any further assistance please send me a pm.

Mike

Thread: Anaerobic adhesive question
24/04/2020 08:55:47

For many applications, such as the one being discuss, I prefer to use slow cure epoxy adhesive rather than anaerobic adhesive. This gives plenty of open time and it forms a very strong bond with steel (and most other metals).

Mike

Thread: What to add to molasses solution to prevent mould growth?
08/04/2020 21:24:14

Potassium sorbate is widely used in the food industry to prevent mould growth. Borax (sodium tetraborate) is widely used in aqueous timber treatments to prevent mould growth.

Hope this helps

Mike

Thread: Cable Gland
21/02/2020 09:27:41

Bore out the 6 mm plate just bigger than the nut and then make a smaller panel out of 3 mm steel to cover the hole on which the gland can be attached.

Mike

Thread: Coolant Pump For Bandsaw.
19/02/2020 10:11:47

I use a windscreen washer pump to provide coolant on my minilathe, see|:

**LINK**

The pump has proved very reliable and the simple fabric filter is very effective at removing small particles.

Mike

Thread: A good toolpost drill design
20/01/2020 09:53:32

Hi Chris,

I only have a minilathe and I apopted a different approach using a flexible drive shaft to take power to the cross-slide, see:

**LINK**

I only fitted a 4 mm chuck but if I made it again I would fit a 6 mm chuck as there is more than sufficient power.

Mike

Thread: What Did You Do Today 2020
03/01/2020 09:58:20

Hi Danny,

Having seen the videos of the situation in Oz I wish you, your neighbours and all Australians success in combating the fires. I feel for you.

Mike

Thread: Micro Mill
09/12/2019 10:11:39

I have a Micromill similar to yours. I found there were two annoying problems with it. One was the noise from the gear selector fork that vibrated badly . The second problem was that even a slight overload would cause the default light to come on and sometimes it would blow the fuse. Fortunately the motor control board was never damaged by these slight overloads.

I converted my Micromill to belt drive, see:

**LINK**

The absence of the gear selector eliminate the noise but the main benefit was that since doing the conversion I have had no problems with slight overloads triggering the default light and blowing fuses. I think the stretch of the belts and or belt slippage in overload conditions eliminates shock loading of the motor.

Mike

Thread: hi from Aarhus
21/11/2019 13:28:13

Hej Alf

Velkommen. I used to live in Sweden for a few years and visited Denmark often. Copenhagen is one of my favorite cities. Visited Aarhus a couple of times too.

Mike

Thread: Angel Eyes.
17/11/2019 18:51:54

There are some very cheap stabilised power supplies available from China. This one seems perfect for you application.

**LINK**

Thread: Mike Cox's cone drills in MEW 285 - source?
26/10/2019 10:57:06

As well as Thor's suggestions cone drills are readily available from ScrewFix in the UK, see:

**LINK**

There are other suppliers on ebay which should be accesible globally

Mike

Thread: QCTP
28/09/2019 16:41:53

Ola Celso,

Nice job and as usual you make it look easy.

Mike

Thread: citric acid
23/09/2019 18:16:10

Vitamin C is ascorbic acid.

Thread: MEW No. 285 Gear Cutters and Gear Cutting
17/09/2019 18:43:16

Niel has already pointed out that one benefit of using conical cutters is that it is easy to make any diameter of cut out using only a limited range of conical cutters. The other benefit of using conical cutters is that they provide relief all around the cut out arc. Using cylindrical cutters and a tilted blank only provide relief in one direction.

The cost of the tapered drills is relatively small and one set can be used to make cutters to match a big range of MOD and tooth counts.

Mike

Thread: Substitute for limonene
31/08/2019 17:10:04

Simon,

Thanks for the information about the solubility of HIPS in limonene. I am chemist but had never come across this titbit of information.

Chemically limonene and turpentine are both terpenes so it could be a good idea to try the latter as it should be more readily available.

Mike

.

30/08/2019 10:44:26

Simon,

ABS (acrylonitrile butadiene styrene polymer) and HIPS (high impact polystyrene) are chemically very similar and they are usually softened and dissolved by the same solvents. Both, for example dissolve readily in acetone and MEK (methyl ethyl ketone).

Where did the information come from that limonene is a selective solvent for HIPS?

Mike

Thread: Home Workshop Site
28/08/2019 22:01:02

Please add my name to the list of well wishers.

Mike

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