CNC Shark Forum

Has anyone had a problem with the Porter Cable 890? Mine went south on me after about 20 hours of operation when a bearing started making noise. The folks at Rockler were very good about replacing it but the question of durability remains.
kruizer

When I look at the file it has a number of toolpaths that seem to duplicate other toolpaths. I checked vectors/nodes, those were in proper order. I made a new toolpath using a V90 degree 0.50. Ran the toolpath and the project came out perfectly with a max depth of 0.125 and just under 3 minutes to ...

When I look at the file it has a number of toolpaths that seem to duplicate other toolpaths. I checked vectors/nodes, those were in proper order. I made a new toolpath using a V90 degree 0.50. Ran the toolpath and the project came out perfectly with a max depth of 0.125 and just under 3 minutes to ...

So post your project and ask for feedback. You say really low feed rates and high feed rates. Hard to give you feedback with no project, or no cutter type/size/depth of cut/stepover/etc., what kind of wood/material you're cutting into, and your notion of low feed rate and what feed rate your found ...

My run time on the chip carved circle is similar so the accel decel is probably okay. I did a test today with a circle program to check the ability to cut round and it came out .030 out round. That is disappointing as it indicates a problem with doing inlays which is one of the reasons I wanted this...

Bob Thanks alot for that. When I was looking at the cutter path, it looked like a lot of Zmoves where it didnt nned to be. I was trying to figure out how to clean it up and got nowhere so thanks again. Now I am trying to figure how to make your chip carved square and am having trouble making the pro...

Joe,. I have taken the time to go through this machine and check for loose screws from top to bottom and found almost all of the screws related to axis control were loose. Tightening them has made a huge difference in the performance although the jerkiness is still there. The screws have been lubed ...

What you say make a lot of sense. I do not have Mach3 and I am not aware of any acceleration comp in the VCarve system. It may be something that can be addressed by the folks at Next Wave. It sure would be nice to have a smooth contour cut at 100 ipm. It would save tons of time.
kruizer

I am talking about feed rates at the high end of 100 ipm and the low end of 25 ipm. The material does not matter as it can be doing a contouring move, cutting air and the head will jump at anything over 50 ipm.

For all of you folks out there that have the new Shark HD, you will want to check the lead screw nuts on all three axis and the screws that hold the support rails under the guide rods. This means you will have to remove the table from the machine to check the Y axis nut. I have been cautioned not to...