spiral router bit upcut vs downcut | When to use straight or spiral router bits.

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spiral router bit upcut vs downcut.
Matt Cremona got in touch with a question about straight & spiral bits, to how do you take yours? straight up or with a twist? Personally I like standard straight flutes and the down-cut spirals for most of my work, but see what happens cross-cutting some rather grainy, oak veneered MDF
we look at spiral router bits and spiral router bit upcut vs downcut.
#spiralrouterbits #spiralupcut #spiralrouterbits
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Опубликовано:

13 июн 2015

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Комментарии : 42

@iainhay2823 9 лет назад

More great info, loving the series and excitedly waiting to see who asks a question next 😀 Appreciate the hard work.

@BrainFizz 9 лет назад

Iain Hay Thanks Iain! :-) It's fun to do!

@icdtww6396 9 лет назад

Thank you so much for this series, I am learning so much!

@BrainFizz 9 лет назад

ICDTWW GREAT! I like it when people get some use of my rantings! :-) even better when they let me know!

@SteveCarmichael 9 лет назад

Good question Matt and good answer Rick! Just started using spiral bits with the cnc, so good timing too.

@BrainFizz 9 лет назад

Steve Carmichael I'll be using a number of 1/8" & 1/4" spiral uppercuts soon too! :-)

@rmhutchins7 6 лет назад

I enjoyed your video. It was very helpful. Very much appreciated! Thank you!

@BrainFizz 6 лет назад

No problem!! Glad it was of some use to you! 👍👍 also thanks for taking the time to comment!

@Mitermikeswoodshop 9 лет назад

this series is very informative.

@BrainFizz 9 лет назад

Miter Mike's Woodshop Thanks Mike!

@petertitan2186 7 лет назад

Good demo thnx

@DemasShopforEverything 9 лет назад

Sweet vid, lots of useful info here :)

@BrainFizz 9 лет назад

***** Thanks Dema! hopefully there's a little gem hidden in the series for most! :-)

@stevecollins9450 9 лет назад

Thanks for that, Richard. Quite helpful for me.

@BrainFizz 9 лет назад

Steve Collins Good stuff, I'm glad to hear from anyone who finds something in my videos of worth! :-)

@DemasShopforEverything 9 лет назад

***** indeed, hope you got my message with my video clip..

@BrainFizz 9 лет назад

***** I did! Sorry, meant to reply! My bad.

@Create2make 9 лет назад

Great series lots of great info, I have a question for you, when your working on smaller parts what is the best way to balance the router? was finding it an issue on my latest video im making.

@BrainFizz 9 лет назад

My Woodworking World Good question! This has already been asked by someone so there will DEFINITELY be a video on this very topic - Probably recording this week. There should be at least three methods to choose from, so definitely keep an eye out for that one!

@babypunkangel 7 лет назад

I use the down cut and the straights for almost anything but the upcut I only use for mortises and that's only because it helps pull out the shavings that get clogged up when I use anything else.

@BrainFizz 7 лет назад

Up Spirals do help pul the chips out, but honestly, I tend to use normal two flutes for morticing... Up spirals are great for template work where there's a veneer on the underside. and also for really knotty grained timber. Down spirals are best for knotty wood and also inlays for a really clean surface finish.

@SBTDesigndotcodotuk 9 лет назад

Hey Rich, cool video as always. Quick question.... Why do you run the curved side of your router along the clamped fence and not the straight side? Cheers.. Steve.

@BrainFizz 9 лет назад

www.sbtdesign.co.uk Possibly for that specific video shot, so you got a clear image of what's happening. But Most good quality routers have a "true radius" on the curved portion of the base. This means if you rotate the base and you still have the same offset to the cutter. It really depends on the material - I use both methods according to which side will give me the best contact of base to the work, and hence the best support. Straight or curved you can use either.

@OllyParryJones 9 лет назад

Good also to see you wearing an AirAce, Rick - a few years ago, it looked as though one or two well-known retailers had decided not to continue stocking them. Have you got a new camera? Everything looks more vivid in this one.

@BrainFizz 9 лет назад

Olly Parry-Jones Hi Olly! :-) I'm LOVING the AirAce. although when i watched you using one in a video, I did scoff a little at the look of them........we use them on the router courses I run, and so for the last few months I've been getting 'used' to it and then decided to change over from the 3M completely. Really liking it - very comfy! :-) On the camera from, I bought a 1080p webcam, a couple of months ago, as I've been thinking about maybe doing some kind of live thing/chat/other.....I've been playing around with the setting a bit and used it for the most of the shots in the video.... You reckon it's an improvement?

@dannymurphy1779 2 года назад

Jonathan Katz-Moses won't have straight bits in his shop, he swears by downcut spiral bits and compression bits. Thanks for demonstrating the old straight bit can still get the job done and we don't all need to bin our bits!!!

@BrainFizz 2 года назад

People prefer what they prefer in terms of tools to do certain tasks. I’ve ever put much stock to some of his advice. Whilst there’s no doubting the effectiveness of a spiral bit, as a specialist tool, it doesn’t replace the humble straight but. I disagree with the need to purchase them in lieu of a straight bit that cost 1/10 the amount.

@saliyalokeshwara7055 3 года назад

I cant find up-cut spiral bits in my country to buy locally anywhere. If i use the standard straight bit to mortise, would that be an issue. Right now i don't have a router with me to try this out

@BrainFizz 3 года назад

Straight bits are completely fine for mortice work. Honestly Yeah, up it’s clear the chips a bit more efficiently…. But straights are fine 100% of the time. I use extra long straight but for deep morticing locks into hardwood, and historical doors and it’s fine👌👌👌 What Most “big name youtubers” nearly always fail to mention, for some reason, is up cuts actually excel when you piece the other side of the work as it’s shearing action pulls the fibres back into the material. They also give clean cuts in crazy grain patterns…. I probably use a spiral bit maybe once a year….. straights are fine👌

@Kingofcarnige 6 лет назад

Most spiral bits I've seen don't have a top bearing, but I need a top bearing. Could I use the shaft of the bit as the guide? I understand that it could burn the wood but has anyone ever tried it? Does it burn the wood badly?

@BrainFizz 6 лет назад

I wouldn't be tempted to use the shank of a cutter as a guide. Better to use a guide/template in conjunction with a guide bush.

@RyanONeill86 3 года назад

The pass you made with the up cut spiral was almost double the depth of the down spiral. Definitely not supposed to take that much out at one point. That could influence the tear out as well…

@BrainFizz 3 года назад

The reason fir the difference in depths of cut it due to the size of the cutter. The first two depths are 1/4” the depth of the down cut is 1/32” all of these are the maximum depth of cut permissible for each cutter. (The thinnest part of the cutter) - so yes, you definitely can cut this deep for each bit. Although cutting less will cause less tear out - as with any cutting operation for any tool.

@grayhalf1854 Год назад

Bit of a noobie question... can you plunge cut with any straight bit? I've only used straight bits for trimming large end panels across their entire length so am entering the material from the side... If I wanted to start in the middle of a piece is there a preference for any particular type of straight bit? Also is there a limit on how quickly you can plunge?

@BrainFizz Год назад

As long as your straight bit doesn’t have a bearing on the end you can plunge cut…… But as a caveat to that I should mention that as the cutters increase in diameter the ends of the cutting edges do no reach the centre of the circle it creates, so this can create a kind of nipple in the bottom of you plunge. Some longer cutters will have a third cutting edge right on the tip to allow for vertical plunge cutting, particularly good mortising locks etc. Another way around is to drill a relief hole if you can, and plan to do a pierce cut (say removing an area for a access). Or you can make several shallow passes along a short path creating a slot muck like a domino would gradually cutting through to depth before routing in from the side as you have been doing. Hope this helps.

@grayhalf1854 Год назад

@@BrainFizz That's very helpful, thank you!

@frankthornal9489 9 лет назад

Richard, how do I choose between a down cut and an up cut spiral bit? Are there two different uses for each bit or is it a matter of preference? Great video!

@BrainFizz 9 лет назад

It boils down your application. With an up cut you get the breakout on the top surface, but the chip clearance is loads better. With a down cut the chips are pushed down but you get a far cleaner cut. Personally I only use a down cut for surface work like inlays. Most work can quite successfully be achieved with a standard straight flute. So I would start with a down cut if you want to inlay. Up cuts are great in cnc routers. Hope thus helps