Member postings for Chris Suddell

Hi,

An update on this one, I have been trying some different ways to keep the rust at bay. I also have the go ahead for another shed in the garden which will be insulated. The Lathe and Mill have been coated with ACF50, I had some in the garage from a few years ago so lets see how that goes.

Thanks for all the comments and suggestions.

I think I'm done for because my Lathe and Mill are in a concrete garage with no insulation.

I'm going to clean them up again and apply some rust preventative and I'm going to have to keep on top of them every week. Unfortunately I only use them about every month. Most of my parts are 3d printed.

It looks like the long term solution is to get them out of the garage and into an insulated wooden shed.

Thanks for all the replies.

Hi,

I'm having a bit of a nightmare keeping rust from forming on my Lathe and Mill both Warco.

I only use them once a month and every time I go back to them rust has formed.

I have used anti corrosion oil over winter and during this summer with a duvet covering them at night.

Apart from two vices all other steel items in my garage are rust free.

I'm a little miffed. Any help would be nice, I don't want them getting really rusty bad.

Thanks everyone!

Unfortunately the American antenna people have not yet caught up with Metric!!!

Hi All,

Ok the material is stainless steel and the threads I believe are

5/8-24 UNEF for the SO239 connectors

3/8-24 UNF (thats all I can find.) for the end of the antenna whips

Chris

Morning,

I'm making some antenna parts (I'm a radio ham) and need the create some threads.

The issue I have is what size to drill the holes to tap for the following sizes;

3/8 - 24

5/8 - 24

Had a google and the best I come come up with is;

3/8 - hole 9mm

5/8 - hole 15mm

The threading on the outside of the parts I'm assuming I use 3/8 (9.52) and 5/8 (15.875mm) barstock respectively and run a die around it.

I hope this makes sense.

Thanks

Hi All,

Ah ha, seems like there may be a few hams here!

Anyway, it is a screwdriver antenna, not just a loading coil. So it needs to go on the ourside of a tube. Unfortunately the Q will only be 300-400 max, but it will do. I've 3d printed 3" and 4" inductors and wound them they work fine. This one needs some strength. I have done the microwave test on a few materials, not all went well.

Joe, I like your variable inductor, very nice.

Chris

M0VUE

Hope this helps.Antenna

Hi All,

The tube needs to be 2 foot long with a thread around 18 inches, 4 inches or 3 inches diameter. My lathe will do 3.75mm max thread. It's to build and inductor coil for an antenna. So there is RF going through the device, it would only get hot if the material reacts to RF.

Hope this helps?

Chris

Hi,

I need to make a thread to set a copper wire around a plastic or GRP tube. My preferance is GRP.

Just wondered if anyone had any tips fo doing this? I have read GRP is nasty and my other option white drainage pipe will heat up.

Any advice will be appreciated.

Hi,

Just bought a lathe and milling machine, WARCO. I'm now looking forward to building some antennas using them. So I no doubt will have lots of questions.

Last time I used these types of tolls was before 1982!!!! So its going to be fun.

I wondered if anyone here mills or lathes with plastics. I'm trying to decide what to make my antenna coils out of (plastic tube with thread in it).

Also, are there any recommendation on aluminium and plastic suppliers? I'm in sussex.

Thanks