Recent content by Daryl_bee

I bet, apart from full depth, you weren't running at 2500rpm (dry) either. ;-D The spreadsheet just states the total end cut depth - you don't have to do it all in one pass (like I did). I was cutting wood gears for a "quicky" box joint jig for my table saw. [British machining - make the tool...

OK, normally I don't but this will be my gift to the forum. I've stripped it out of my proprietary monster mechanical workbook. You enter data in the two green cells, answers are below in amber cells.The green bar under plate holes will shift depending on your input telling you what plate/hole...

For me it was cutting gears on my mill with a dividing head. Simple as it is there was always something until I made my checklist & even then I still have to be careful!

Your words are gospel. I have never joined the major social media groups as I see how they mine your info and track you. Even worse, they claim perpetual ownership of anything that lands on their site(s). Years & years ago I was warned of these things by a lawyer who has argued cases at the...

The wonderful thing about "standards" is that there are so many to chose from!

The worst I had was once at work (years ago) I had to create a fairly involved cad model from a supplier datasheet. The border stated (in words) it was third angle projection. The part was drawn in first angle projection. You can't imagine the head scratching that went on until I finally clued...

The use of degrees predates any distance measurement and comes from ancient Babylonian astronomy (probably before). Readings, calculations and tables were done in degrees, minutes, seconds, thirds, fourths, & fifths etc. Predating excel etc (imagine making tables lengthy enough to be bound into...

I believe the correct modern technical term today is "wireless hole puncher" ;-D If you want to see some real old school skill you should check out Gunsmith of Williamsburg (with Wallace Guslar Master Gunsmith) 1969 on Youtube. It starts off with him firing what he has created from scratch then...

When I say "silver" I mean the metal. It's the 2nd best heat conductor (429 W/m K) after diamond (2200 W/m K - wow!). Copper is only (398 W/m K). Silver will transfer heat to/from the internal air better than any other practical material. I don't think the stove plate (input) needs to be black...

You see this makes me wonder more why glass displacer cylinders aren't used on stove fans. Here (the movie above) heat (open flame) is being applied directly to the glass (insulator) which is less optimal than what I was asking - glass for cylinder walls only. Forgive my 10 minute CAD sketch...

Well the engine I was looking at is a stove fan but it's that line in red (above) I don't understand. Metal conducts heat so brings the hot and cold plates closer together thermally and, with the lower temperature difference (compared to insulator separation) should give lower performance...

Hi I asked a Stirling engine maker "Why don't you make all your engines have a glass displacer cylinder? Watching the displacer is a visual delight, helps to explain the engine, and glass is a good insulator so it should have good performance. Am I missing something?" The answer I got back was...

Well that LTD lived on a bit longer as the basis of my Stickler wood-splitter. In high school shop (1970's) I completed everything I was supposed to so I got to do "an extra". I chose a new wood-splitter design that I saw in a Harrowsmith magazine called "The Stickler". Basically an oversized...

Here's another danger to watch for. Oil injection caused by damaged hose. What can seem initially as a minor injury can, in the end, be fatal if not dealt with properly. Keep away from leaks! Test with a board. Always something to consider near hydraulics. On a lighter note, showing the...

While I absolutely agree with what you say I wasn't kidding about the rating (8 posts back up). Here's a vid of a similar press in action. Note the die area he is squeezing with - he's not punching. Note at about 2:30 how the stiff high carbon steel heats back up to yellow with the internal...