THE MONTHLY TIPS COMPETITION – THE ENTRY THREAD!

[Charles LamontParticipant @charleslamont71117]

Just measured a green Rizzla at 0.0012″ (at 9.5°C and 55% humidity). I normally use the feeler gauge method.

Here’s mine: When setting work up on the faceplate, use spring or belleville washers. This allows the bolts to be tightened just enough to hold the job, but allow it to moved with a light tap.

[Charles Lamont]

On Charles Lamont Said:

Just measured a green Rizzla at 0.0012″ (at 9.5°C and 55% humidity). I normally use the feeler gauge method.

Here’s mine: When setting work up on the faceplate, use spring or belleville washers. This allows the bolts to be tightened just enough to hold the job, but allow it to moved with a light tap.

Good tip about bellville washers Charles, always a problem to hold a part on the faceplate at just the right pressure.

Just to continue the paper theme, when cylindrical grinding you can’t always get a bit of fag paper to stay on, so we used to mark the surface with a Chinagraph pencil.

Andy

[bernard towersParticipant @bernardtowers37738]

I like the chinagraph pencil tip Andrew, I use mine to write numbers down on the paintwork of the lathe/mill in case I forget or get sidetracked.

[Neil Wyatt]

On Neil Wyatt Said:

A lot of pedantry here? Anyone with a micrometer or even a digital caliper can get an accurate enough for this rule of thumb measurement.

…

Neil

So I did,  I own Rizla Silver in the belief it’s thinner than the others.  Could be wrong!

Not easy to measure accurately with a Micrometer because paper crushes, so using the ratchet I took the average of 5 measurements taken along the length of 3 folded fag papers. i.e. 6 sheets.   Result in mm: 0.108,  0.097, 0.091, 0.093, 0.096.  Sum: 0.485,  Average thickness of 6 folded fag papers:   0.097mm

Therefore each sheet is approx:  0.0194mm, or 0.00076378″  (about ¾ of a thou).  My eyeballs suggest wetting fag paper with spit or oil makes it thinner. Not confirmed.

Fag paper is a good way of positioning a cutter very close to the job, but not high precision if one is chasing tenths.

Dave

 

[Phil PParticipant @philp]

Whilst on the subject of paper.

I often use a sheet of paper between the work and table on a milling machine, and similarly on a lathe faceplate, it helps prevent the work sliding around.

Phil P

[bernard towersParticipant @bernardtowers37738]

Yes Phil an often forgotten little helper.

[Author]

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