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Old 06-29-2020, 02:28 PM
ruun96 ruun96 is offline
CAMaster Owner
Join Date: Mar 2018
Location: Wichita, KS
Posts: 12
Default "Wobbly" Cuts with Panther

I'm getting some inaccurate cuts that I can only describe as "wobbly". I see them in ovals, straight cuts, 3d contours, pretty much everywhere. Can anyone share a link to a video with some basic maintenance tips, like how to check belts, etc? We've been running our router for about a year in a production environment for about a year with no issues except this one, and it seems to be getting progressively worse. PT-408 cutting poly tool board and various plastics, wincnc post out of RhinoCam. TIA
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Old 06-30-2020, 10:26 AM
Jim Becker Jim Becker is offline
CAMaster Owner
Join Date: Jan 2018
Location: SE PA
Posts: 1,622

Loose belts can absolutely cause that kind of behavior...I had the issue with my Stinger II and it was because of a loose x-axis belt. I later found out the right side y-axis belt also needed to be snugged, too. I've started to check them about every other lubrication interval now. Some folks may want to check more machine isn't running constantly due to the nature of my business being part time and not solely focused on the CNC.
Jim Becker

SR-44 (2018), 1.7kw spindle, Performance Premium, USB, Keypad, T-Slot table (y-axis configuration), WinCNC, VCarve Pro upgraded to Aspire

Non CNC stuff...

SCM/Minimax - slider/JP/BS
Festool "a good collection"
Stubby - lathe
Oneida Cyclone

Retired from full time work in the telecom industry 9/2017
Commission work for equestrian tack storage and other custom furniture and cabinetry
Located Bucks County PA
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Old 06-30-2020, 01:40 PM
jjwdawg jjwdawg is offline
CAMaster owner
Join Date: Jun 2015
Posts: 39

I've got the same issue with my Panther. Michael @ CAMaster helped a lot with various tests, etc. I ultimately replaced the transmissions on both Y axes and the X axis. This reduced the severity of it significantly, but it's still there. My latest theory is an issue with the X or Z bearings, but I haven't come up with a good way to test that, short of replacing them all.

I particularly notice it when cutting letters/signs in HDU foam. I almost always have to hand sand the curved profiles to smooth them out.

I'll be watching this thread - please share when you find the fix :-)

James Watson
Moultrie Made, Inc.

2015 Panther PT-508
HSD 5HP ATC Spindle
8-tool carousel
15HP Regen vacuum
Aspire 9.5
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Old 07-01-2020, 04:03 PM
Luke Bennett's Avatar
Luke Bennett Luke Bennett is offline
CAMaster Tech
Join Date: Mar 2010
Posts: 268

Looks like you do have something lose. Contact and we will look into your issue.
Luke Bennett
CAMaster CNC Tech

Frankenstinger 25x48 custom machine
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