Unwanted lines appear for no reason? Or some reason?
Posted: Thu Feb 23, 2012 11:59 pm
First, the equipment.
Shark Pro Plus HD, Bosch 1617, Precise Bits 1/8 tapered ball end bit.
Feed rate 100 inches per minute, plunge rate 15 inches per minute, router speed about 20K rpm.
Ran as "offset" with a climb cut.
Tool Data base shows pass depth of 0.125, stepover of 0.0124 (10%)
Post Processor: CNCShark- USB NewArcs - (inch) (*.Tap)
The material: MDF (termite barf?)
The file: a purchased 3d model from VectorArt3d
The software: Aspire 3.5
Have cut this file twice. The first time things were OK, no strange artifacts. It didn't look good , but that was me , not the machine, the software or the file.
The second time I got some strange lines in the carving. They form an "X" centered on the project, with a square box line centered on the "X". They are shallow, but very ugly . (see attached photos)
I am new to this and, frankly, have NO clue as to what might have happened. So, I ask you experts a highly technical question.......Duh, wha happ'n?
Shark Pro Plus HD, Bosch 1617, Precise Bits 1/8 tapered ball end bit.
Feed rate 100 inches per minute, plunge rate 15 inches per minute, router speed about 20K rpm.
Ran as "offset" with a climb cut.
Tool Data base shows pass depth of 0.125, stepover of 0.0124 (10%)
Post Processor: CNCShark- USB NewArcs - (inch) (*.Tap)
The material: MDF (termite barf?)
The file: a purchased 3d model from VectorArt3d
The software: Aspire 3.5
Have cut this file twice. The first time things were OK, no strange artifacts. It didn't look good , but that was me , not the machine, the software or the file.
The second time I got some strange lines in the carving. They form an "X" centered on the project, with a square box line centered on the "X". They are shallow, but very ugly . (see attached photos)
I am new to this and, frankly, have NO clue as to what might have happened. So, I ask you experts a highly technical question.......Duh, wha happ'n?