What is the minimum size of router bit you can use with a small CNC routing/engraving table?

Antony G asked:
I considering buying a CNC router table (max material cutting size is 1200mm x 800mm x 90mm). The website indicates the blade holder specfications are 3.175mm, 4mm & 6mm. Does this mean that the minimum router bit size I can use with this machine is 3.175mm? Basically, I want to cut narrow [...]

Free (or cheap) CNC router CAD files?

Mobius asked:
I am looking for free (or cheap) CAD files (DXF or DWG format) that can be used with a CNC router. In particular I would like scroll work designs for decorating furniture.

Does a beam saw leave any machining marks on material?

Antony G asked:
I am considering using a CNC beam saw to cut some MDF. I need to know if this type of machine would leave any saw marks on the cut surfaces of the material.
Basically, I need to find a way of cutting a large sheet of MDF (30mm thinkness) into 12mm [...]

Build Your Own CNC Router/DIY CNC Router

Many people like to build their own CNC Routers because they like having something that functions that they have built by their own hands. There are many different ways that you can do this yourself if you would like to do it.
Some people like to bypass some of the making of the CNC Router and [...]

Which is the best router blade to produce a rough cut surface?

Antony G asked:
I’m looking to use a CNC router table to flycut the top surface of some wood. Importantly, I need the surface to end up quite rough e.g the type of rough cut surface you would get from cutting some wood using a circular saw (but without any machining marks). Which router blade [...]

Cutting grooves through MDF using a CNC router - aparently not possible. Is this correct?

Antony G asked:
I have a sheet of MDF (2500 x 1250 x 30mm) and I want to find out if it is possible to cut 3mm (or the width of the minimum size router bit possible) square grooves/slits across the MDF exactly 12mm apart. These grooves/slits would run the length of the MDF [...]

CNC router cutting MDF?

Antony G asked:
I need to find a way of cutting a sheet of MDF which the dimensions 2500mm x 1250mm x 30mm, into strips 12mm wide.
The cut surfaces must be totally free from tool marks and the strips of MDF must be cut completely straight with 90 degree edges. I’ve obviously considered using [...]

Is it possible to reduce the spindle rotation speed on a CNC router below it’s normal speed range?

Antony G asked:
I’m going to be using a CNC router to flycut some MDF and I want to create a slightly rough surface. One machine I am considering buying has a spindle rotation speed range of 6,000 to 24,000 RPM. Does anyone know if it is somehow possible to set the machine to cut [...]

CNC Router - Need help with bits, feed speeds, etc?

Chris Fulton asked:
I have a newly built CNC router. Its built off of the HobbyCNC plans. It has a HobbyCNC controler (3 axis) with 305oz motors. The ‘router’ is a trim router that takes 1/4″ bits.
I’m looking for help with some guidelines regarding selecing the right bit, plunge rate and feed [...]