Thread: Smooth finish with v bit on mdf
-
16-10-2015 #1
Hi
Bit of a newbie here but Im using a v bit to engrave into mdf and I cant get a smooth finish on the surface. Instead I get a finish with the edges appearing shredded. Could anyone suggest a how to obtain smooth edges or point me to a thread explaining how to.
Cheers
-
16-10-2015 #2
Good finish is mostly down to speeds and feeds and the stiffness of your machine. What you got and what speeds and feeds you using?
-
16-10-2015 #3
Most finishing strategies involve ball end cutters
-
16-10-2015 #4
-
16-10-2015 #5
Is it possible still to get a smooth finish only when cutting 2D designs to a single depth throughout, with the V-bit. Ive seen outputs on youtube that have a smooth finish with the V-bit.
-
16-10-2015 #6
Hi,
MDF is usually quite nice to machine and forgives a lot in terms of feedrate and rpm.
Is your tool sharp enough (cheap ones are often dull by design - good V-bits can be quite pricey)?
You may try to cut in 2 passes to improve results - just start the program twice:
- The first time zero your Z-axis 0.1mm higher than required.
- Second time zero your Z-axis correctly, use max rpm and moderate feedrates.
Christian2D / 3D CAM Software and CNC controller: http://www.estlcam.com
-
16-10-2015 #7
Also depends on the grade of MDF - some is like cold-rolled cardboard and will never give a decent finish.
-
16-10-2015 #8
Thanks. Il try and see if running the cut twice works. It could be the bit, I got it for under £5.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
How to get this finish..?
By Wal in forum Metal Finishing TechniquesReplies: 15Last Post: 02-02-2017, 11:08 PM -
Aluminum finish
By Boyan Silyavski in forum Metal Finishing TechniquesReplies: 3Last Post: 07-09-2014, 07:32 PM -
how to smooth stl model, smooth curves out of straight lines
By chris in forum DeskProtoReplies: 4Last Post: 21-01-2014, 11:00 PM -
Better finish
By luke11cnc in forum Wood Finishing Tips & TricksReplies: 20Last Post: 27-03-2012, 11:25 PM -
better than smooth stepper
By Metalhead in forum Motor Drivers & ControllersReplies: 5Last Post: 21-06-2010, 06:43 PM
Bookmarks