Diy portable power supply

[Dohertybespokecarpentry]

Isnt square wave modified sine wave? And most power tools use universal motors which means they work on ac or dc and in all honesty its just so i can use my bigger tools as cordless grinders/table saws etc tend to be anemic haha i ihink even 3 of my batteries at 60v would still be better than an 18v one or paying through the nose for flexvolt tools at 140 a battery plus 500 a tool its not something I want to fork out for

 

[Dohertybespokecarpentry]

Plus i have heard generators are bad for charging batteries

 

[suffolkspark]

Generators are fine for charging batteries, yes modified sine wave is still square but is slightly improved over the basic square type... Google it

 

[telectrix]

try powering a 25mm auger bit through 4" thick joists - 100 holes in total. had to be makita 110V sds for that, followed by large dose of ibuprofen for aching arms.

 

[HandySparks]

try powering a 25mm auger bit through 4" thick joists - 100 holes in total. had to be makita 110V sds for that, followed by large dose of ibuprofen for aching arms.

Here you are, tel, (although it pains me to say it, as all my cordless stuff is Makita) these Milwaukee hole hawgs look the biz for big holes in wood:

 

[telectrix]

Here you are, tel, (although it pains me to say it, as all my cordless stuff is Makita) these Milwaukee hole hawgs look the biz for big holes in wood:

ptobably fine if only a few holes. with auger bits, it's a lot of torque required as opposed to rotational speed. those batteries would not last out long.

 

[Dohertybespokecarpentry]

Its forstner bits and hole saws not augerbits maybe they might last longer?

 

[HandySparks]

ptobably fine if only a few holes. with auger bits, it's a lot of torque required as opposed to rotational speed. those batteries would not last out long.

Did you watch the video? Manufacturer claims the Hole Hawg (the small one) is rated for auger bits up to 1¼" and will do 150 7/8" holes on one charge. I find that pretty impressive. The bigger one has a two speed gearbox giving a slow speed of 350 rpm for bigger bits.

 

[telectrix]

Did you watch the video? Manufacturer claims the Hole Hawg (the small one) is rated for auger bits up to 1¼" and will do 150 7/8" holes on one charge. I find that pretty impressive. The bigger one has a two speed gearbox giving a slow speed of 350 rpm for bigger bits.

sounds impressive. unfortunately, i can'y justify spending that amount of hard-earned.

 

[static zap]

DC over 80V is more hazardous.
Earth gives a reference point ..
(possibly more dangerous...Unless it can trip some "Exotic?" safety device) ....
....We are not Switch-Mode-PSU designers !....

 

[Intoelectrics]

I can't help thinking that just buying cordless power tools is the best way in the long term. There are very few power tools now that aren't available battery powered. I haven't used a mains powered tool on site for ages, apart from the vacuum cleaner, and you can get quite powerful battery ones of those now.

De-walt do a battery & mains power vacuum cleaner. Its not cheap at around £200 but its perfect for site work as it is quite powerful & runs off a 18v lithium or 230v mains.

DeWalt DCV582 18v XR Wet & Dry Vacuum - Bare Unit - https://www.mytoolshed.co.uk/dewalt-dcv582-18v-xr-wet-dry-vacuum-bare-unit.html?utm_source=google_shopping&gclid=Cj0KCQjwjN7YBRCOARIsAFCb936lYSTBALeG27q1cNLhAco8TDjusiNNyjYPAPz02YQSioZgsxdjBaMaAlRzEALw_wcB

I use it everyday so worth it to me.