SchenzhenSpecial

You're not being serious are you?😂 Some brands put a (somewhere near) -15deg cut off switch on batteries to stop them from delivering power beyond that. Although most people are unlikely to see -40, at the temperature lithium batteries stop working completely. https://www.toolstop.co.uk/blog/lithium-ion-batteries-and-winter-how-to-keep-working-in-the-cold/

Most metal roofing profiles are around the 3mm thick mark, increase that for stiffening ribs and where the folds for the profile are introduced and you're going to spend a lot of time cutting these out with a 6" hole saw. Depending on the profile I'd probably prefer to use a jigsaw or if the sheet metal gauge is light enough, a punch nibbler that will allow you to follow the profile. I've recently been working with 100mm profile roof deck and had to cut to end of 30mm holes into it and I was sick of it.

Plastic production and the distance it has come is the result of manufacurers being cheap. If it works it doesn't matter but the quality of machined or even cast parts is becoming a neccesity when required rather than an expectation. There's also an environmental impact by using more readily disposible plastics.

I once vaguely knew a girl from Scotland whos old man moved to Houston to work for BP... I wonder.

They've definately always been plastic and they're dirt cheap to replace should you have a failure in one. Part Number Dewalt N254620 https://www.partswarehouse.com/DeWalt-Sa-Clamp-Lever-DWB-N25462-p/dwb-n254620.htm $6.88

Are we talking right angle drills or 1/2" pistol drills tho? As I said. If you're worried, engage the driver clutch and if it does bind it wont break your wrist. And before anyone says it, I run 6" hole cutters like that daily without issue.

I'll take your word for it but I'm afraid my own experience suggests otherwise.

Never understood the need for anti-kickback in drill-drivers. If it's something you're worried about use the side handle or if that's not possible use the driver clutch. Understandable in rotaries but even then most have a clutch now.

Not really noticed problems in cold weather but they don't perform nearly as well as they should in normal temperatures. A bit of a reduction in performance is to be expected.

There's a AWS model of the DVC750 in development too(as I suggested above before being told it would be too expensive and wasn't fit for purpose). Additional Makpac base should also be coming with it.

Where I said "personally think" should have made it obvious that it was my opinion.

Well I gave my opinion of what I'd want from such a tool and you rubbished it as being more expensive and not fit for that purpose. As I've said they managed AWS and a 36v platform with the backpack so why couldn't they do the same with the box type. You can't harp on about people having differing opinions while on the other hand rubbishing anyone elses, very hypocritical.

So it'll sell as it is to people who want it. It doesn't have what I want so I won't buy it. That's what I want from a cordless vacuum. What's your problem, far too defensive. They managed it with the backpack vac so why not a box type. Festool managed to have it interlock with the Makpac and Tloc so why couldn't Makita. No, he was talking about the Dyson hand held at 350watts and presented the argument it isn't all down to motor power. The Makita vac is a suggested to be 50watt, while he was using a 1000watt vac as an example in his post. Comparing the 1000 and 2000 watt units it pretty irrelevant you're basing the discussion on a 350 or 50 watt unit. It's all there in the thread pal.

Youre putting the difference between a 1000w and 50w vacuum down to seals...

...indulge me.

With shocking runtime, worse charge time and extortionate genuine battery costs. It is what it is and not intended to replace a corded vacuum.

Personally think it needs AWS and it needs Makpac compatibility. Until it has both of those it's not for me. Would have been nice to see it on a 36v platform too as cordless vacuum run times are pitiful. This example is the best I've seen with 36min on low with a 6ah.

Or this guy who he nicked it from

Is there any visible arcing? I find it's usually bad brushes that cause a loss of power at first glance. Brushes are cheap, start there. If that doesn't fix it, you'll have to take it apart presuming it's out of warranty - if it's still covered just send it back to Makita. If the armature is burned out you'll get smoke, barely enough power to cut anything if not a complete failure to turn after trying for a while. A multimeter will show open circuit across all windings. Check online for common values of resistance, if any are well out of range +- 2-3 counts you have a bad winding. Check the commutator surface. Does it show signs of burning, is it pitted? Is it out of balance or no longer perfectly aligned face to face?

They're not powerful enough.

Your words. I'm well aware of this. At this point I'm struggling to see what it is you're arguing about. If you have 8 cells putting out 2amps at 20v, they're going to perform better for longer than 4 cells putting out 2 amps at 20v. Why are you going in circles talking about cell capacity? A new Bosch 'slim' 4ah is currently selling in the UK for around £70. For the same money I can have the 18650 lined 6ah. Is the 4ah slim going to outperfom the 6ah? On current, yes - should the tool need it. Run time? Probably not. Cost for its lifespan, very unlikely.

I'm wondering if we're going to see much as consumers for a while. The largest markets would be automotive and energy storage from renewables such as solar and wind. Seeing such tech in your hand I don't think will be around the corner. Something you might want to read: https://electrek.co/2018/02/28/bosch-gives-up-battery-cell-production-electric-car/

I've already said this.

Then that's what he should have said. Not what he actually said, which implied lithium would perform differently because there's more of it. The performance of the battery isn't the same as the performance of the heavy metal the cell is made of. You're talking about performance over increased capacity. On what you're saying 100 cells would perform better than 1 cell. Yes. That's true, that's not what you said, or at least not how it was was worded. This isn't true. A larger capacity cell will be able to belt out more current per-cell no different to a 2gallon bottle holding more water than a 1gallon bottle. That is not to say the lithium within the cell will deteriorate at a slower rate. I've linked you to a study which looks at the rate of deterioration compared to amount of recharge cycles, already.