With the right techniques and tooling your CNC router can mill brass and aluminum with dependability, accuracy and consistency. Milling these materials on a home shop CNC router isn’t difficult, but milling metal requires a different and a disciplined approach. Here is a basic formula to get you started:
1. Stick with easily machinable alloys.
2. Choose the bit that is correct for brass or aluminum.
3. Mill at an RPM and feed rate that is right for your machine.
4. Use a light depth of cut.
5. Lubricate the bit.
6. Clear the chips.
The Alloys
We want to choose an alloy that machines easily, is commonly available and is affordable. Aluminum alloy 6061 is a great choice to work with. Manganese and silicon are the major alloying elements. Alloy 6061 is strong, corrosion resistant, inexpensive and widely available and can be easily machined on a CNC router.
Ultra-machinable 360 brass consists of copper and zinc, and as you might guess from the name, it is made to be easily machined with the addition of lead. This attractive alloy stands up to high speed milling with minimal wear on tooling while generating chips that clear easily from the cut.
1 360 brass alloy material is excellent for CNC routing.
2 A two-flute bit (left) for brass and single flute bit for aluminum.
The Right Bit
ãã®èšäºã¯ Popular Woodworking ã® December 2020 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã9,000 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã ?  ãµã€ã³ã€ã³
ãã®èšäºã¯ Popular Woodworking ã® December 2020 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã9,000 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã? ãµã€ã³ã€ã³
BauBuche
This laminated material comes from Germany, and is made of hundreds of layers of European beech.
Square Platter with Textured Rim
Adding a bit of texture and colour to a square platter is a great way to dress up a simple design.
Excedo Side Table
With one board, you can put together this side table that packs in a bunch of great woodworking techniques.
Lignomat Mini-LIGNO DX/C
One of the hardest things for me to explain as a woodworking instructor is the importance of knowing the moisture content of the wood you're working with.
Gen II Compact Brushless 1/2" Drill/Driver
I have to confess this review is coming from a fairly biased space-the first generation ONE+ HP Compact Drill is probably my favorite drill I've ever owned.
Inlays with Origin
Origin, the hand-held CNC from Shaper Tools, makes creating inlays effortless.
Deluxe Scriber
There are often times, where there's simply no substitute for the right tool.
Ryobi Compact Barrel Grip Jigsaw
A jigsaw is a great tool for all sorts of quick cuts in the shop. With that in mind, the ONE+ HP Compact Brushless Barrel Grip Jig Saw is just the right size to make it a go-to choice.
Ultrashear Flat Top Blade
Several issues back, I introduced our readers to a new lineup of blades from Woodpeckers.
Metabo HPT 12" Dual Bevel Sliding Miter Saw
In my shop I have fairly high standards for a miter saw.