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Next time I am tempted to write, I think I will ask the three Dave’s to review prior to pushing send.

Well reasoned and insightful, David S.

Mike

On May 15, 2023, at 11:41 AM, David Sabo via <sabo_dave=[email protected]> wrote:

?

Don't think it's a push at best.? From a total cost perspective it could be a clear winner.? It could also be a clear loser.? Like you said, it depends on the circumstances.? Which,? in this case is lots of teak with frequent knife changes.

Plenty of large scale facilities using plain straight knives too.? What's your point ?

Sam's piece / opinion doesn't really re-enforce your position.? He hedges by saying "probably" for each type of head and and shop.? Plus he doesn't broach the cost of either head, ever.? So it's really impossible to use his musings in a discussion on? "which is cheaper". ??

Furthermore - I? NEVER said segments only belong in a garage shop - nor is it my opinion.? Let's look at what I actually said:

" So? I'll re-iterate.......if you're a well healed garage warrior, or shop that occasionally process solid timber; segments will be cheaper because you likely won't reach the break even point the changeover labor of segments adds to the equation."

I said segments will be CHEAPER for the garage shop because they are less likely to change blades and approach the cost savings in labor that Tersa affords.?? That's a big difference from saying it only belongs in a garage shop.? HUGE.?

It's a pretty simple math problem.?? The more you change blades and the higher your labor costs are , the cheaper Tersa becomes.? The less you change blades and the cheaper your labor is , the cheaper a Segment is.? This is true whether you're in a garage in rural Mississippi or a state of the art factory in California.

Another way to look at it to ask yourself why production lines of all types want to automate and replace humans with machines pretty much everywhere they can ?? Not because it's cool, but because it's cheaper at the end of the day.

D

On Monday, May 15, 2023 at 12:03:53 PM EDT, Andy <andy.raynor08@...> wrote:

I didn’t “come around” to your line of thinking. I challenged your assertion that Tersa is less expensive. You’ve only gone ahead and proven that it’s probably a push, from a cost perspective, unless under very specific?circumstances.

Also there are plenty of large scale production facilities that use segmented heads.?

Sam Blasco, noted Tersa advocate seems to take the exact opposite position as you. In the first paragraph of this article, he suggested that in fact Tersa belongs in an artisan shop, whereas Xylent belongs in production.?

He goes on to gush about Tersa and all of its benefits, however the idea the segmented cutter heads belong in the garage only is just your opinion and one that even the self proclaimed Tersa aficionado Sam Blasco doesn’t share.?

On Mon, May 15, 2023 at 11:29 AM David Sabo via <sabo_dave=[email protected]> wrote:

"

Yep. There are lots of ways to view it. Both options are great. I just don’t think one is more cost effective than the other. I can just turn one carbide segment if it gets chipped, Tersa is a quicker wholesale swap."

Now that you've come round to realizing Tersa is a quicker swap-? it should make what I said earlier (or tried to) about Tersa being? cheaper the more you change your cutters pretty obvious. Your cutter edge savings with segments is pretty quickly eroded the more you swap edges because of the time suck involved in rotating an entire heads' worth of them.

And you don't have an option for questionable material with segments.? You run it and deal with the consequences.?

Yes, both are great options.? But I still stand my my original supposition that Tersa will be better /cheaper if you are in a production environment and frequently changing blades.?? Turning "one segment" is not where you're losing money.

? It's the turning of 50 to 100 of them !? The more often that occurs, the more the scale is tilted to Tersa.?? So? I'll re-iterate.......if you're a well healed garage warrior, or shop that occasionally process solid timber; segments will be cheaper because you likely won't reach the break even point the changeover labor of segments adds to the equation.?? Even cheaper than that will be reg. ol straight knives if you only change them once every 5-10 years.? Someone milling 1000's of board feet a week or month and changing blades frequently certainly should pay attention to how long a changeover is costing.? No money is being made while the machine is idle.