Amana Tool45210 Carbide Tipped Straight Plunge High Production 1/4 Dia x 1" 4 S

I do quite a bit of CNC work, so I go through a lot of quarter-inch bits as that's one of the most common sizes I use. It's surprising how a down cut bit that's $40 only last a few sessions, and it's wiped out. Lately I've been going to 2 flute bits instead of the standard up cut or down cut bits.This particular one is much sharper right out of package than some others I've tried, Timerline, Whiteside, CMT. CMT is one of the worst ones. One session that was a few hours dulled that bit. I'm happy to report that this one is the leader of the pack so far. Plunges very nicely, and seem just a sharp after a number of hours of cutting oak. No burning whatsoever. I tend to use at 12,000 RPM, and slow plunge rates down to about 20-25 IPM. In general I find slowing down plunge rates extends the life of CNC bits considerably. It's not the straight cuts that get you, it's plunging that can burn a bit up. I tend to ramp my bits into the work where possible, but this is not possible with a lot of 3-D work. This bit plunges very nicely and cleanly. Even nicer than some bits that cost three times the price.I highly recommend this. So far I've been extremely impressed with the Amana brand. I used one of their spoil board bits, and the results were simply outstanding. I think I will be purchasing more of the Amana brand. Just ordered my second quarter-inch bit to have on hand, but my current one is showing no signs of dulling.

Great cutter for profile cuts. Quick and clean.

Haven't actually used it yet that's why only 4 stars

I have a few 1/4" tools but I turn to this one from Amana more than the others. I've owned it nearly 3 years and put it through MDF, plywoods and weathered pallet scraps. This week I cut 1,886 inches in 15/32" birch veneered plywood from the hardware store and the cut quality was so good you could shave with it. I run 18k rpm, full width .250 DOC, 45ipm feed, 27ipm plunge/ramp, 2 degree ramp angle, 20ipm for inner/outer corners. Keep the toolpath clear of packed sawdust since it doesn't have a spiral to self-eject.

I needed to make a stopped groove 1/4 inch wide and 1 inch deep for the pocket to accept the tongue on the end of a breadboard. This Amana bit# 45210 was the perfect size. I set it up on my router table to make a plunge cut with a start and stop block to help guide the workpiece through the cut. Taking several cuts in small increments I was able to rout out the grooves for a perfect fit.The bit is super sharp and very well made, high quality for a good price!

I needed to rout mortises in cabinet doors for Soss invisible hinges Soss's template is 3/4" thick, which meant that the bits I had couldn't go deep enough. This is the longest bit I could find (3".) The shearing action of the bit made very clean mortises. Very satisfied and I would recommend this bit.

thanks. looks good

I am a fan of Amana tool and have several other bits of theirs that are great, but something went wrong with this bit. I was using my router table routing a straight line in some maple doing shallow cuts with each pass. I was almost done when suddenly the board was violently thrown across the workshop! after picking up the board I looked at the router table and noticed the bit broke in half near where the shank tapers into the blades.luckily the broken bit fell into the cavity of the router table and didn't injure me. The bit was brand new and only had about 15 minutes of use on it. I noticed a few other people had this problem so it must be a design flaw or poor quality metal used in this bit. So now I'm going to get a 1/4 inch straight Whiteside bit as a replacement.

Muy buena herramienta

got this for my dad and he said he was impressed w the quality

Considero que lo mas importante es: 1.-el material de su fabricación, 2.- el diseño de la disposición de cuchillas así como de la fortaleza de su acabado.lo utilizo en la elaboración de un auxiliar de carpintería: Guía para cortar espigas y cajas.

Muy buena lo muy poco que duró! 🤣

No soporto una rutina de trabajo