Masonry bits: what's the best type?

Рет қаралды 6,348

Күн бұрын

Masonry bits: how do the different shapes perform? What's the difference between a 2 cutter and a 4 cutter? Which one drills faster? What masonry bit is best? Can you strap your phone to a hammer drill? Let's take a look!
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00:00 - Prologue
00:19 - Intro
00:42 - Bit Prices
01:11 - Bit shapes
01:55 - Speed test
04:12 - Vibration test
06:43 - Why do they vibrate differently? SLO MO!
08:38 - Hole quality
09:08 - Bit wear
10:37 - Results summary
11:36 - Which is best?

Пікірлер: 29

@NaeFliesOnMe 10 күн бұрын

Excellent video! I wasn't too sure what the Nemesis was all about but I know now! Very instructive review which allows for an educated choice!

@bobbyhutton1989 Жыл бұрын

Good job on this video. I really enjoyed the slowmo shots. I have been loving the Diablo 4 cutter bits, not sure if they are available over there.

@toolscientist Жыл бұрын

Another interesting (but time consuming test) would be quad tip vs twin tip longevity. It'd be nice to see a graph of time-per-hole vs number-of-holes. Prob need at least 30 and maybe 100 holes though.

@BoltahDownunder Жыл бұрын

Yeah this test had 30ish holes each and I was hoping to do more of a wear test but I ran out of time/material. I think that's going to be a whole video on it's own; like the vibration thing I'll find more than I expect to during the testing

@toolscientist Жыл бұрын

@@BoltahDownunder definitely a vid of its own. Any noticeable drop after 30 holes? What sort of deviation were you getting between runs?

@BoltahDownunder Жыл бұрын

I only did the timing for the first few, but it seemed about the same. By the end I was into the granite which had a rougher surface and not good for accurate timing

@yuseefmattash Жыл бұрын

BIT 4 IS Good because have little bit of deflection

@itsnot1673 9 ай бұрын

Nice informative video Not sure about the maths on the size differences before and after though looks like the last one the nemesis 4 is the only one thats correct? 0.06 0.08 0.04

@bomogo 3 ай бұрын

Fantastic video! Have you tried the Irwin bits? Or any of the brands that make the drills?

@BoltahDownunder 3 ай бұрын

Thanks mate! Matter of fact I'm about to start testing all the different drill bits I could find, including Irwin. It'll be a while before I get it out, but yes it's coming

@garvielloken3929 Жыл бұрын

nooice

@toolscientist Жыл бұрын

Quad tip has double the number of flutes, so maybe more parasitic drag that bogs the motor down. Could you try using an angle grinder to remove two of the cutters on a quad tip so we can see if the speed decrease is due to the cutters or the flutes. Another option could be using the dust extraction bits, but they're expensive and I think only come in quad tip

@BoltahDownunder Жыл бұрын

Yeah I'm still trying to think of a valid way to assess flute geometry effects, but I do like the idea of grinding tips down. Anecdotally I find the ones with the widest flutes/thinnest walls drill the quickest, but that's going to be less important than the tip geometry

@toolscientist Жыл бұрын

@@BoltahDownunder the harder option would be grinding 2 of the flutes off the quad tip, but then you could compare an OG twin tip to a quad tip with 2 flutes. Would be interesting to see if a single flute is even faster or if it gets bogged down from inabilty to clear the debris.

@toolscientist Жыл бұрын

@@BoltahDownunder do you have an optical tacho? Measure the RPM of the quad tip vs twin tip. If quad has lower RPM then it's almost certainly getting more drag.

@BoltahDownunder Жыл бұрын

I do, and depending on the rig that might be easier than my current unpublished method, counting ipm on the video's audio waveform.

@toolscientist Жыл бұрын

@@BoltahDownunder you've already got the data then! Let me know if there was any difference between the bpm of the quad vs twin tips.

@istopedthewuhanlabfunding6351 Жыл бұрын

The RRRREAL test is on deco Granite ..boalders ..they will smash yor nice tips .. Like i am finding out ..

@istopedthewuhanlabfunding6351 Жыл бұрын

Go slow . Dont hit it to hard ...

@Saxondog Жыл бұрын

More importantly, does the Nemesis drill through re-bar?

@BoltahDownunder Жыл бұрын

We'll have to wait for my new concrete with reo to set first 🤓

@toolscientist Жыл бұрын

@@BoltahDownunder have you considered using concrete sleepers? Might be more expensive than doing it yourself, but should be more uniform across each sample and more consistent between different samples.

@BoltahDownunder Жыл бұрын

I have but my current facilities (my small backyard) doesn't accommodate that. I just got some concrete delivered that should do me for a couple of years. All the same batch, in small man-handable blocks. But it'll be 28 days before they're fully set so I'm doing some other stuff on the meantime

@istopedthewuhanlabfunding6351 Жыл бұрын

Get some mini 4mm shank Diamond files .. n sharpppppen the tips .. You will see the diff.😱💥🇦🇺

@istopedthewuhanlabfunding6351 Жыл бұрын

Kogan..ali.x.$$$$ werth every cent.

@istopedthewuhanlabfunding6351 Жыл бұрын

CAP that rock. .22.