First off, I'm not one to write a review much less a bad review. So this is very sad and disheartening to me. As you know, Freud products are suppose to be the top of the line and so far, they have been. Supposedly you get what you pay for. Which is why I tend to buy Freud products only. For the most part, I sing their praises. However not so with these Tongue and Grove bits (Freud 99-036: 1-3/4" (Dia.) Adjustable Tongue & Groove Bit Set).Lately I have been making Cherry wood Charcuterie boards. I was using a Crapsman biscuit joiner that was my grandfather that he bought some time in the mid 80's. The accuracy is just not there anymore. So I decided that I would just use this Tongue and Grove bit set instead. The first board (about 22" long) finished out great. One pass with the "Tongue" bit and after a little bit of set up tests, one pass with the "Grove" bit. Very little planing down to make the seams even. "Great" I thought.Now on to the other boards. (about 2 or 3 weeks later) Again the "Tongue" bit did a great job but this is where it gets a bit cheeky. Taking the same scrap piece I use as a "set up" piece (meaning a "Tongue cut about 1mm or less deep), I started setting up for the "Grove" side. Holding the scrap piece tightly, I lightly bring it to the bit so I can see how close it was running after I had gotten it close with the router being turned off.Let me stop here and give you a bit of info. I am a professional woodworker (meaning I get paid for most of my work) and have been doing this a long time. I have a Bosch 1617 EVS router in a very sturdy cabinet. Also I followed the speed settings which is 16,000 rpm. That equates to # 3 seed setting on that Bosch. So this ain't my first rodeo mate.Carefully I slid my scrap over to the spinning bit making fine adjustments before I even touched the scrap piece to the bit. Looks spot on. Lock the router in place and try my cut. Still less than 1mm into the wood and just to the side of the "Tongue" cut. So glad I had eye protection on. A piece of that top bit's carbide cutting tip came flying off. I did say that the setup cut was less than 1mm. Right? Not a fun day when a 3mm x 3mm piece of shrapnel comes flying at you. God was with me on that one. The only thing damaged was the scrap "setup" piece and the bit. I was even able the find said shrapnel.So now I look into doing a return. Amazon said I needed to contact the company directly. In short, I talked to a warranty guy directly and was surprised that he was a local (same continent and not from china). He sent me an email with the return instructions within minutes. Great customer service. However as I thought because it was a warranty return, they should've picked up the shipping tab. No such luck. There goes another $14 to UPS. Ok not bad. Cheaper than buying a new set. plus the turn around time was pretty quick too. Woo hoo.Fast forward several months. Time to get going on the next batch. Same deal just a new day. Only this time I haven't found the potential ER visit and it has ruined some expensive Cherry wood plus I lost that job. Time to see if they will honor their product again or do I switch to a different brand. So buyer be ware. You could end up with a visit the either the ER or even the cemetery.I'll try to update this after I find out how well it goes this time.