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 Post subject: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 7:26 pm 
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Hi all, new on here and after some advice. I bought a dewalt dcd775 drill as part of a combi set and has been ok for what I need it for until the other week. I needed to put in a new door lock and it kept jamming when I was using an 18mm flat bit to deepen the cavity. Brand new bit so wasn't blunt. Thinking about the dcd996 with 3 speed gear box. Does having the 3rd gear make any difference and is it worth the extra cost to upgrade it.
Thanks in advance


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 7:40 pm 
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heeelllooo and welcome Spider3798 :welcome: :welcome: :welcome:
its a massive 870w so brilliant
but uses the new batteries only as in slide on not plug in
mines just happens to be sitting beside me on the computer desk :thumbright: :thumbright:

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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 8:06 pm 
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Hi big-all, thanks for the welcome. Yep mine's an xr with the slide on batteries. So you would say it's worth the money to get the dcd996. What's the difference in watts? Also does that affect the torque settings? Couldn't believe that mine was jamming on speed 2 and 13 torque on a cardboard door :wtf:. Need it to go through fence rails when building gates for the handles. Hate to say it but my old ryobi combi drill managed to do it without jamming.


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 8:17 pm 
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i have a dcd785 on its second set of brushes and a i think... a dcd 796

both are absolutely fine for general joinery work.

i got the newer brushless drill when the original packed in after a good 3 or 4 years of use. i then repaired the old one so i now have both.

my mate has the dcd996 and its a bit of a big one tbh like


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 8:46 pm 
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Hi fin, thanks for your response. Mine is brushless but still concerned as it wouldn't go through the door easily and wasn't solid wood. That's why I'm thinking of upgrading to the 996.


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 9:18 pm 
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Spade bits need high speed more than raw power, so what speed were you running at? If a spade bit jams it's maybe because it is being run too slowly but fed too quickly. Avoid spade bits with threaded noses (like the Bosch ones) because they can easily overfeed and jam. TBH if you want to dig big holes in solid wood you'd be better off with an auger bit run at low speed than with a spade bit run at high speed.

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Last edited by Job and Knock on Sat Feb 02, 2019 9:21 pm, edited 1 time in total.

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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 9:21 pm 
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you should get the 996 for around the £120 mark without battery or charger
yes its the most powerful battery drill [hammer/drilldriver]they do most are around the 500-700w range

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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 9:52 pm 
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Hi job and knock, was running it with the trigger fully depressed so assuming full speed and feeding it slowly to make sure I didn't bust out the side of the door. Just a bit surprised it kept stopping. Is it a possible problem with the drill or am I just being useless lol


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sat Feb 02, 2019 10:18 pm 
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with lithium ion batteries both the drill and battery have protection built in to stop overload or going undervolt
what size are batteries [ah amp hour]how old are they and how well charged are they ??

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 Post subject: Re: Dewalt combi drills.
PostPosted: Sun Feb 03, 2019 9:51 am 
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I think i have the lowest drill http://service.dewalt.co.uk/DEWALT/GB/e ... l?id=12300
and its been fine drilling 16mm holes in Brick and also 4x4 Gate posts.
I have also used various flat bit upto 25mm , in 18mm MDF and some 4x1
all seem to be OK - usually if the drill stops , I just removed and try again - although I'm also considering getting the 996
BUT i'm using a fully charged 3AH Battery


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sun Feb 03, 2019 10:06 am 
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Spider3798 wrote:
Hi job and knock, was running it with the trigger fully depressed so assuming full speed and feeding it slowly to make sure I didn't bust out the side of the door. Just a bit surprised it kept stopping. Is it a possible problem with the drill or am I just being useless lol

It's not you. I suspect that either the battery isn't holding charge or that the motor in the drill is duff. Before I went to 18 volt I used to drill lock mortises out with a fairly basic 12 volt Makita NiCd cordless. It was slow and used to eat batteries, but it did it. My first 18 volt Makita (BHP453 - not to heavy one) could also drill out lock mortises, so an 18 volt brushless tool should be able to do the job.

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 Post subject: Re: Dewalt combi drills.
PostPosted: Sun Feb 03, 2019 12:36 pm 
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yea both of my drills are more than capable of drilling out mortises for locks or powering my lock mortising jig.

go with gear 1 for drilling locks out too. it will do it no bother at all unless as above either drill or battery is goosed like


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sun Feb 03, 2019 4:52 pm 
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Hi all, thanks for your comments. Was using a brand new 3ah battery on it at the time. Wonder if it is the drill but it's brand new as well.


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sun Feb 03, 2019 10:55 pm 
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Spider3798 wrote:
Couldn't believe that mine was jamming on speed 2 and 13 torque on a cardboard door

By jamming do you mean the clutch is disengaging or is the motor stalling?
If the clutch, does it have a 'drill' position on the torque setting ring?
I think one of mine is the 775 and that has the numbered torque settings, then one for drill, and then one for hammer drill.


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 Post subject: Re: Dewalt combi drills.
PostPosted: Sun Feb 03, 2019 11:57 pm 
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my thoughts are the drill at 350w is over heating in second gear
3ah is 3x 18w x 60 so about 3240w then deduct say 10% for losses will be around 3000w so will run for about 8 mins on full power so the battery unlikely to cut out until perhaps the third lock where as the drill may operate the overload protection in second gear :dunno:

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