#CNC

In this video we take you through how to surface your CNC router MDF spoilboard. For this video we are using the i2R B 8 24" x 48" CNC Machine. Spoilboards are also often called sacrificial boards or even bleeder boards so if you see people using those terms you will know what they are referring to.
00:26 - 01:37 Setting Up Your Project File
01:38 - 02:32 Creating the Vector
02:32 - 08:28 Creating Toolpath
08:28 - 10:14 Saving Toolpaths
10:15 - 12:58 Setting up your Machine
12:59 - 14:17 Running the Toolpath
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[@dougsullivan9022]

Thanks for the video, guys. This job can be made just a little bit easier though. When you set the vector size (go to 1 min 40 secs), instead of creating a rectangle the same size as the spoilboard, make the rectangle approx 1/2" bigger in both the X and Y directions and centre the rectangle to the spoilboard. That way, the only tool path you need is the pocket tool path. It will surface the entire board.

[@dencio1976]

No sealer used?

[@nil_photography_ny1952]

Can this process work with EnRoute ?

[@gratefulzugore7383]

I just followed the directions above perfectly. I had contacted i2R after reading the tram comments. they said it was set at the factory so I surfaced and got ripples, not bad, just minor. Anyone know of instructions on how to tram the i2R 8 having 1 hp spindle?

[@joeygonzo]

nice

[@jimcorolewski134]

This tutorial assumes that the spindle is trammed in. If the spindle is not perpendicular to the machine table, in both X and Y axis, the surface will be rippled after surfacing. The depth of the ripple will depend on how far out of perpendicularity(tram) the spindle is.

[@greglopez9311]

What is a bad ripple? Am I looking for perfectly flat?

[@patricklyman6550]

A ripple is when you can see lines in the material from slight height differences between passes. That's typically due to a spindle that isn't trammed perfectly perpendicular to the machine bed. Since there's a slight angle, one side of the bit is going to dip a little further from the other, causing the ripple - the less trammed, the worse of a ripple. If your spindle is perfectly trammed, you should get a perfectly smooth surface finish. Hope this helps!

[@greglopez9311]

I know what a ripple is. My machine arrived out of tram. I was asking how much of a ripple should be considered acceptable.

[@greglopez9311]

Matter of fact, maybe a tramming demo on the iR2 8 would be helpful.

[@dougsullivan9022]

@@greglopez9311 There should be no discernible ripple. The spindle should be checked with a dial indicator mounted in the collet but if you don't have a dial indicator, using an accurate square against the spindle body and the spoilboard in both the X and Y alignment will give you an indication of how bad and in which axis (or both) the problem lies.
Far and away, the best solution is to buy a dial indicator. They are a very useful tool in your workshop. Do, of course, make sure you get the correct indicator for the job.

[@greglopez9311]

@@dougsullivan9022 thanks Doug. Yes i got it dialed in. I needed some shimming and I was able to get near perfect. I appreciate it