From: Harvey only (HARVEY-ONLY) [#16]
7 Sep 2006
To: joyce (JLADY) [#15] 8 Sep 2006
If I am translating 'Z float' properly, that is too much. If it is how far the spindle tries to travel downward after touching the piece, it is compressing the spring .15". Set it for .05, or .02 as recommended in a previous post to lessen the spring pressure exerted on the drag bit. If you are gouging the bit shaft will flex due to the excessive drag caused by the pressure.
From: logojohn [#17]
7 Sep 2006
To: Harvey only (HARVEY-ONLY) [#16] 7 Sep 2006
That is what it does. But the spring tension can also be adjusted a lot by compressing it more (or less) by moving a large ring up or down the threaded center holding the spring.
If it was close to the maximum compression, the .15 could present some of the problems you mentioned. But if it was set toward the less compressed end, .15 likely wouldn't be a problem on anything except soft metal like pewter.
They likely suggested .15 so there is some float in case something isn't flat. But most flat metal can be done with .05 or even less.
The spring can be set with very little pressure. I sometimes set the float up to 1/2 inch (and also increase the cutter up distance). This allows doing things like metal flasks, flashlights etc. that are round but can't be done on the cylindrical attachment. Between the float and the light spring pressure, it follows the curve on the item as far down as you can go without hitting the cutter bevel against it.
It will autosense the surface after each letter so could go up or down a slope a little at a time with it set at a low amount.
But if the line finishes at a low spot and a small cutter up is entered, when the cutter returns to the beginning of the next line it could gouge into the side of a raised area in the middle.
With the high settings it will also float over the whole item. That is necessary with an underline, decoration or logo that covers a large distance. Since it is one character, the autosensing will not adjust throughtout.
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From: joyce (JLADY) [#18]
8 Sep 2006
To: ALL
Curious when I do large characters (.85) for example the lines are near perfect even on the curves.
From: joyce (JLADY) [#19]
11 Sep 2006
To: ALL
Now I am thinking it is the metal. I used a perp plt from tropar and it came out fine, then engraved it on laser brass from continental and it was horrible again.
Another side issue with my machine, the reason I was getting engraving in the air, is the belt isn't lowering immediately (there is a delay or not at all) because for whatever reason the spindle motor sporatically turns on.
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