Member postings for Roderick Jenkins

Link to a BBC news report on the sand problem:

**LINK**

We were on the North Norfolk coast last week. Now looking for a dent removal company after a roof tile tried to have a go at flying over our car ( and failed )

Rod

I think the point is that you can't do commercial work without them. Sadly, the hobbyist is collateral damage in the war against the freeloaders.

Rod

The diamond is bonded into the end of steel rod which can modified as required.

Rod

Will this **LINK** from Axminster do?

HTH,

Rod

It seems to me that what Fusion and Onshape have done is to try and make sure that commercial users cannot gainfully use the free versions and are trying very hard to keep a free version available.

While there seem to be viable options for 3D CAD for the home user, I am not sure what the options for CAM are.

Most of Jason's comments on using his KX3 have actually been about using the Fusion360 CAM rather than, in his case, Alibre.

So, what do we use if Fusion360 CAM becomes un-affordable?

Rod

Don't give up yet, it's still better than anything else at the price

You can still make STL files for 3D printing and CAM for 3 axis milling. The loss of multi axis milling is a disappointment though, I am preparing a 4th axis for my little mill

I think it is reasonable to assume that professional users have not been playing fair with the personal license.

Rod

Ricard Arwel is trying to identify one of these in "Scribe a line" in MEW 297

Rod

I've had several queries recently about my current Excel version of CamCalc which produces coordinates for the milling of cams for i.c. engines.

The link is:

**LINK**

There is no need to download the Dropbox app. Choose the "Or continue to website" option and wait for the download symbol to appear in the top right hand corner.

There are sometimes queries concerning the look of the cam part way through machining. The machining coordinates are not the outline of the cam but give the path of a flat ended endmill passed across the blank at every (in this case) 3 degrees). You have to go all the way around to end up with the correct profile. The sketch below perhaps shows why this is so.

If there is any way to lodge this spreadsheet on the site I would be happy to do so.

Hope this helps,

Rod

Jim,

I'll send you a personal mail tomorrow.

JIm,

I couldn't get the ETW carb to work on mine. I had great results using the carb I made for the Matador 10cc glow engine. Very flexible running.

I tried to replicate this with a brass copy with the same internal dimensions as the Matador carb.

This runs ok but not as well as the Matador carb. I didn't put an air bleed on the brass version and I think it runs too rich at lower revs - something I intend to put right but I have now developed a leak on the inlet valve so some major work is required.

HTH,

Rod

Edited By Roderick Jenkins on 11/09/2020 19:48:00

I believe the gears available with the metric conversion set are:

28, 30,35,40,45x2,50x2,55,60x2,63

According to my calculations the following gives an exact 60tpi:

Drivers: 28 30 35

Driven: 40 50 63

Gearbox set to 14tpi

Would anybody care to check?

I don't know whether the gears will actually mesh but it is probably worth a try.

HTH,

Rod

Hi John,

I would put a good radius at the root of the hexagon. I didn't on my first attempt and it snapped off at the transition.

HTH,

Rod

Jim,

That really is very nice.

Rod

I used HTS2000 for this:

HTH,

Rod

I'm sure that most of the spelling mistakes that we see are the result of using touch screens on phones and tablets and the consequent attempts from the spellchecker at interpretation, not ignorance.

Well, that's my excuse anyway.

Rod

Spiral fretsaw blades are available from Axminster **LINK**

Rod

Hi Martin,

Good question!

I guess it's because the plates and sector arms etc. are normally on the Timmins head on the mill (and I don't have to wind the the handle 4 x 15 times to mill a square)

Cheers,

Rod

Edit OK, 3x15 times

Edited By Roderick Jenkins on 04/09/2020 20:53:06

We had a similar looking box on a post on our 1980's built housing estate. The box was pressed steel rather than cast. We wondered about it for years but it turned out to be for the use of the postman to dump half his bagful and split his round.

Rod

Edit - grabbed a pic from Streetview

Edited By Roderick Jenkins on 03/09/2020 13:58:55

May I ask why?

Rod

These bits from RENNIE are available with 1/8" shanks. I've been using them in my Dremel with success. Although described as router bits I see no reason why they shouldn't be used for milling. I guess the distinction between routing and milling is largely to do with rotational speed and small bits need high speeds.

HTH,

Rod