Spiral Bits - Compression VS Upcut VS Downcut VS Straight - Never Before Seen 19,000 FPS HD Video

[@katzmosestools]

*Support What We Do at The Katz-Moses Store-* bit.ly/KMWstore20 *BitsBits is the BEST place to buy router bits:* bit.ly/BitsBits USE CODE JKATZMOSES15 for 15% off *PART Numbers* Astra Coated Compression ½” - 540-CM500 Compression ¼” - 425-CM250 Upcut Spiral ½” - 540-SRF500 Upcut Spiral 1/4” - SRF4-250 Downcut Spiral ½” - 530-DNC500 Downcut Spiral ¼” - 420-DNC250

[@ShaneCarrigan]

I just bought a shop apron :) super excited to get it!

[@ralphcraig5816]

Newbie router guy here, thanks for the very helpful information. Just ordered the top compression bit from your guys, figured I won't have to think about that for a while! 12 buck discount, thanks again. I'll be back soon...

[@jarrettanderson9694]

Ppp0pp

[@douggauthier4768]

How would it work if I did a contour toolpath in 2 steps, and did a bit change mid way from a down to an up?

[@VoeltnerWoodworking]

This has been the best video for describing the differences between the bits...and the high frames per second shots are fantastic!! 👊🏼

[@diziktoolinggroup5598]

You are saying what I want to say

[@cady.moriarty]

I must say, you have utilized your time with the slow-mo camera beautifully. Even if this was the only footage you shot, it is impressive to see just how beneficial the frame of reference is while you're explaining every detail. Keep it up, please, this is just more motivation to work harder and upgrade to quality bits as soon as possible! ✌️

[@katzmosestools]

And we have like 5 or 6 full length videos planned with slow mo stuff still. Thanks bud

[@livedeliciously]

I don't think there's another woodworking channel that is able to educate so well on woodworking.

[@DerekFromMalden]

FINALLY someone used a high speed camera for content that was appropriate. The high speed was really useful, Thanks Johathan

[@spkendrick]

A Very much needed video! I think many seasoned Woodworkers on KZbin completely mis the mark on what less seasoned workers actually call helpful content. Comparisons, demos, explanations, tool setup videos and videos like this are the most helpful in my opinion. Thank you!!!

[@katzmosestools]

My guy!

[@spkendrick]

@@katzmosestools What about flush trim on a router table with spiral bits.... whats the difference on upcut vs downcut.

[@genot8495]

Prime example of a (moving) picture is worth a thousand words. Great, great, great!

[@rhihodag9873]

This is one of your BEST vids, to-date, Jonathon! Great summary of all the different types of bits. That slow-mo tells it all. Unbelievable how much wood movement there is with the straight bits. Thanks for pulling this video together. Really, really love that slow-mo footage!

[@BiggMo]

Thanks Jonathan- appreciate you taking a turn at providing these bits of information. Because you plunged into this subject the subject is far less splintered for me. Shear is a good video and you avoided taking knotty twist in your presentation.

[@katzmosestools]

Very punny! 🤣

[@darrylportelli]

Amazing explanation .... small tip for whoever wants to start using spiral bits - if you want to experiment a bit and see which bit is best for your application before laying down your cash and buying one, get some HSS end mills - they are spiral bits that are used in milling machines and fit just as well in a router ... they are CHEAP AS HELL and an engineering supply house will have all sorts of shapes and sizes ,so you can really experiment before committing to buying a more expensive bit

[@lew9462]

Differences between these bits/endmills are always asked by newbies in the hobby CNC world. You can explain it to them, but visualizing it with those slow-mo shots is worth 1 million words when you can see what 16k+ rpm cuts really look like. Too cool! Awesome man. I'm sending this to everyone.

[@MrFas4wd]

I only learned about uncut, downcut, compression bits a couple of days ago whilst looking at router bits on Amazon. Then, by sheer coincidence this video is on my feed on KZbin and what a spectacular job you have done in explaining them. Thanks.

[@WarPigstheHun]

This is a really good video. I learned why my straight cutters were causing so much tearout, and that you can use down-cut bits for top-down routing to preserve the face-up from tearout.

[@jakebrakejunky10-4]

Ive been venturing into wood working over the last two years really just messing around and building stuff for my house and doing remod work and now im wanting to get serious into it and start building my own furniture and ive got family thats wanting some custom build stuff to. Ive been looking at routers and tables and cnc and this just helped me in so many ways in making my decision. A huge thank you for this.

[@chriswilliams1096]

You are a great teacher. All the info is presented concisely and clearly. You engage the viewer without being patronising. There's a touch of humour to keep the mood light. The high speed camera work is good, too - it perfectly illustrates the point you are making. I can't imagine how the topic could have been better explained.

[@anthonygianacopoulos9918]

Probably one of the best videos I’ve watched on woodworking. And he is a gifted communicator and teacher.

[@GregsGarage]

Once again, great use of the slo-mo to capture the cutting action and help explain the bit types. I can't believe the vibration from that straight cutting bit!!!

[@katzmosestools]

Yeah and whats crazy is its happening so fast we didn't notice until reviewing the footage.

[@ShaunGuthrie-CaskWoodworking]

Probably the most comprehensive review with video (amazing video I might add) anywhere online. This really gives someone the best understanding of cause and effect (kinda like The Matrix second movie 😎)

[@katzmosestools]

Hahahaha thanks bud!

[@mikegilbert5434]

I’m getting back into woodworking after a 20 year hiatus. These were not widely available back then. Really re learning a lot from your channel, thanks!!

[@kshermit]

That was so insanely helpful in understanding something I didn’t know existed 20 minutes ago. Thanks man!

[@derrickp2628]

Thanks man for such a detailed explanation on bit differences. Was experiencing TERRIBLE tearout with my project and it dawned on me that maybe I’m using the wrong bit. 🤦🏾‍♂️😂 Thanks again.

[@creightonwest6632]

Brother: on your advice, I got a compression girl bit for Christmas for myself. What a difference. Everything you said is true, and I highly recommend compression bits, especially if you use templates a lot. With the grain, against the grain, it doesn’t matter and it leaves a very smooth finish. Thanks again.

[@chestnut250]

Thank you for yet another outstanding, information, and USEFUL video. I, as well as countless others, really do appreciate the time and work you put into producing these quality, no BS videos with tips and advise we can actually put to good, functional use. Keep up the good work!

[@ericberman4193]

Good video. Lots of information well-presented in less than 15 minutes.

[@tharemyhopkins5873]

Must have missed this one when it came out, but when I searched "up cut vs downcut" and saw that JKM had a video on it I was like "oh, sweet, I won't have to watch a few cuz I know he'll do it right and be interesting to watch, too". Thanks!

[@haroldgolden5437]

One of your best videos yet! Combining education with entertainment is a formula for success!

[@berngalat5246]

The best explanation of spiral/compression bits I've seen. High speed photography is awesome.

[@doitnewitt4163]

Fantastic video JKM love the footage !! Thank you for doing this for everyone to see !

[@katzmosestools]

My pleasure bud!

[@asherhaig3265]

By far one of the most useful videos on this topic. Seeing what the bits are doing really makes an enormous difference for understanding what is being described. Thanks!!

[@mauriceryton]

That was such an awesome video. The demonstrations were amazing. I bought my first down cut spiral bit this year, l was amazed how fast and cleanly it cut. The biggest benefit was how much easier the router was to guide through the material. Your explanations were concise and very easy to understand too. Thank you.

[@DoItProjects]

Accompanying these explanations with high speed footage is brilliant. Very descriptive. I think a lot of people will get some great use out of this video. Great job!

[@theeggman1341]

Brilliant video. The high speed footage demonstrates exactly what these bits actually do. So much better than someone just explaining the properties of each type of bit.

[@mcarojcc]

Great explanation about the various bits and when to use them. And I am LOVING the slomo footage you guys captured. It adds amazing clarity to the examples.

[@cratergoodsllc]

That's is one heck of a depth of cut on the straight bit. No wonder the wood is moving.

[@terryhealy7826]

The high speed close ups were very helpful in illustrating what you were talking about. Very nice.

[@pikesticker]

Just getting into shaped objects inlay work and inlay banding projects. My brother is also interested but would rather I make all the mistakes first to educate him properly. Ha. This video is priceless for getting new woodworkers up to speed on the performance of various bits. Shared video with a number of friends. Thanks!

[@darrellgordon9224]

Thanks for the slo-mo! Really helps me understand which bit to use!

[@eltoronegro]

Thanks for this video explaining bits. I’ve been looking at getting some good bits and it’s nice to know what they each do. High speed footage = awesome.

[@revon0521]

Well done again, Jonathon. Your videos are like a well planned cutting list; very little waste. I appreciate that. Keep it up, brother.

[@chrisgoins348]

Wow! Just wow! Mr. Jonathan Katz-Moses you do great work and your very knowledgeable in your craft! Great content great teaching! I appreciate what you do for the woodworking crowd. I'm just getting started on KZbin and trying to build my own woodworking business completely from scratch! No I'm not spamming your comment section to do anything I'm just saying I'm blown away by your channel and the content you put out there! I'm hoping one day I'm doing just as good as you and grow my knowledge as you have over time! I appreciate you sir!

[@katzmosestools]

Truly appreciate it my friend!

[@bostarbird5282]

New to routers and answers a lot of questions. Thanks.

[@FoxyCAMTV]

I bought my first bit yesterday and its the first one,the one that you say sucks and today KZbin recommends this.

[@johnthomas3264]

I love downcut bits. I get that on the leading side of the cut you get fuzzing, but the rest of the cut is very smooth and clean. When if I stop before the edge, it is always covered or I square off with a chisel. Plus, I almost always plunge and when I cut though both ends have clean edges. Of course us woodworkers have our personal preferences, and it is great to have choices. Totally awesome vid sir.

[@lorifarrell5705]

this was a great video of why the bit choice matters; the high speed views + explanations made it so clear.

[@Simon.in.Ireland]

Outstandingly useful video, thanks Jonathan. The slo-mo make it so clear.

[@casimircreer2295]

Really good video. Wish I would have seen this a year ago. Very much enjoying the short instructionals. Thank you.

[@diziktoolinggroup5598]

Very useful and excellent video . Thank you

[@sebaDominguezPicchio]

oh man.. can´t believe how amazing your videos are.. seriously.. and this comes from a dude that is JUST a hobbyist from a country with almost no access to machines and tools variety you guys have over there, so pretty much all I can do is watch a ton of videos.. but yours are -by far- the best of the best. I´m just struggling to understand why the heck you don´t have 3 times the subscribers you actually have.. you gotta do some marketing c'mon! seriously. tremendous slo-mo footage, but most important.. tremendous good quality information

[@twpvw5]

Love the (not so) subtle stopblock product placement in the closeup shots. Awesome content and instruction using the high-speed footage, thanks!

[@katekeough9819]

Thanks for the discount I ordered four sparky new bits

[@fredygump5578]

This is so good! All the information I need and more, and you aren't talking to me like I'm a child. Keep it up. I think I'll be spending the evening surfing your videos!

[@samgooding-matthews3175]

Thank you so much for this I have been struggling to get good results from my router but I see KZbin videos and it’s like the only tool they use and TA-DA perfect finish 🤔 you sir are such a legend for this content 👍🏻

[@v-dub1317]

Excellent video! Very informative, and great slo-mo footage of the bit action. Thank you!

[@vladiocy2884]

Very nice and simple video about. First Heat and after chip load. Heat is what i always say to my studens. Generaly 10% on matereal 10 % on bit and 80% on chip.

[@steveisrome1719]

Well spent money on the camera. I already consider you the highest production value channel (independent) on KZbin, and this just reminds me and all the others of that. Great video btw, I'm getting into routing right now and have endless questions on why/how to use certain bits, and why you reach for a router with a bit in mind for a task type.

[@PiefacePete46]

Great video on a little covered topic. It will become my "go to" source of demonstration, especially with the slomo's, when I am trying to explain why downcut is the way to go, even though it sounds illogical. One scenario that I don't recall seeing is a through-cut, where both the top and bottom faces are unsupported. For example, the workpiece is clamped so the cut is off the edge of the bench, and in the final cut, the bit is protruding above and below the work. An upcut bit will tear out the top. A downcut will tear out the bottom. A compression bit will produce beautiful clean edges, both top and bottom. That reads like Momma bear, Poppa bear, and Baby bear... never mind! Thanks for your stunning videos.

[@robertbamford8266]

Could be your best video ever. Worth rewatching. And the high speed camera! Thanks.

[@theintelligentcarpenter9407]

J, thank you so much for making vids like this. I know many of us don't have the time to research and your vids are exactly what weekenders need to get the most of our time. Stay awesome.

[@ericvanzandt2208]

Already out of the 1/4 downcut until the 17th. Thanks for the info Jonathan. Got my first good straight bit from Bits and Bits because of you and WOW, the difference.I will be getting the upcut and a downcut when I can.

[@katzmosestools]

That's 3 days from now so no biggie

[@peterbonifacio3288]

Very useful and good explanation of main types of bits and their advantages and disadvantages . Kudos to the host!

[@Tugmun11]

learning, learning, learning, Tanks A+ Great video and now I know where I'm going to buy Bits and more Bits

[@pietervheerden]

Super helpful video, thank you. Answered all the questions I had.

[@Skoden_lures]

Best explanation I have ever seen. Thanks for this.

[@tonyn.4761]

Great video and thanks for the discount. Saved me 160 bucks!

[@jaybaldwin5376]

Just the most useful and informative YT I have watched for a while..👍

[@P2MediaLA]

Very well produced video! Impressive!

[@maydanlex]

Lots of really great information here. Thanks!

[@badmatt4227]

Great videographer and quantifiable information that has helped me

[@badmatt4227]

Do you have a suggestion for the correct bit to use with a trammel? (If possible, do you also have a suggestion which trammel to purchase?)

[@stefanisaksson255]

Best explanation ever! Thank you!

[@jerrystringer4023]

Great video! Pretty good looking of mesquite against the back wall, too!

[@bingobango8777]

Awesome video. Ton of great info in 12 minutes. Visuals and simple explanation are awesome.

[@cksartsandcrafts3893]

Great lesson, sir. A special thanks for the usage of slow motion camera that gave us a good comparison and good understanding, please do more this kind of things.

[@markr6699]

Wow. Superb video and narration comparing bit types, performance, upcut v downcut, and the advantages of spiral bits. The high speed video provided excellent illustration; physics for woodworkers. Learned more in 12 minutes than I have in quite some time. And I just realized I'm an hour drive from Bits & Bits in OR. Good reason to visit the Frank Lloyd Wright Gordon house again too.

[@daniel412inm]

Muy buena explicación! Gracias! Now i am ready to buy the best bit for the work i am doing, Thak You!

[@NAFUSO1]

As a new woodworker still learning stuff like this, this may be the single most useful educational video on using my router table. Thank you! (Incidentally, my birthday is coming up and I've got my eye on your shop apron...).

[@tomidornik7482]

Thank you! Made my decision pretty straightforward

[@J-D248]

The CSI of woodworking. Dude I love your channel!

[@suzannecrawford7015]

Fantastic video. Many thanks for the slow mo video and detailed information.

[@farshadbagheri]

Very thorough and the slow-motion video was super helpful. Thank you.

[@stararts_official4369]

Im a beginner and love this video to understand how it works!

[@MaydaysCustomWoodworks]

Very cool. That compression bit was fantastic. And that CMT blade cleaner on your table works great. I have some. Let it sit in a blade for 5 minutes and you can practically wipe away the pitch and resin with a paper towel.

[@mikeburrello4396]

Great video!! Very helpful and simple!

[@ducpao]

Super helpful! Great information! Thank you!

[@reedcustomcabinetrywoodwor8780]

FANTASTIC!!!

[@guitardedimbisol6087]

Excellent video very well explained

[@temeculayardgames]

This is a such a great tutorial! Thank you

[@dukeengine1339]

You are posting very interesting videos. As you said, for hand tools there are other channels, but for a mixture of information especially on power tools you are the best to me. Thank you boss!!!

[@katzmosestools]

I go through phases. Was on a hand tool kick most of last year hahaha

[@topgun0964]

Wow. 652 dadoes done, that’s over 1200 sanding edges. I see this video. But not changing my bit now. Everything is set up and I have to get to 800 dadoes. But great video. Awesome. Thanks so much.

[@ThekiBoran]

I agree with others, holy crap that was a great explanation of the different types of router bits.

[@jasonyannuccelli2499]

That was a great video…. I am a beginner at CNC routing and anything “timber work related”… I have watched several videos on this subject but yours really cemented it for me and was by far the best explanation I have heard 👍 Your slow mo video clips really helped cement the concepts. I’m subscribed 👍

[@BigP100]

Excellent content. Very informative

[@watermain48]

Great video Jonathan, thanks for sharing it. After I watch it about three more times I will have gotten a better handle on all that information.

[@bougie86]

What can i say... One of the best videos I've seen since I start woodworking. Thank you very much for sharing. Take care and Stay safe :)

[@ptabz3112]

Nice footage! I've always wanted to show people how those bits work. Thanks for sharing.

[@martinmorgan9]

Thanks for this great video with superb slow-motion footage. I'm just learning to use a router and the explanation about spiral cut vs. straight cut is very effectively demonstrated here.

[@douglassiemens4245]

Thanks for helping to end the confusion. Nice slo-mo!

[@fixittony]

Great video! I bought a bit using your code to help me with SOSS hinge installation.

[@thehawkc]

Thanks .Always learn something on your channel. Ordered apron early, can't wait to get it.

[@moodymysta]

Best video out there! good job bud!

[@richardthomason5829]

just getting started and this is good information. thanks