From Popular Mechanics
Harbor Freight Tools, a nationwide discount tool and equipment retailer,
is recalling about 1.7 million Drill Master 18-Volt cordless drills,
urging customers to stop using the item immediately and return it to a
Harbor Freight store to receive a replacement.
"The drill's internal switching mechanism can become stuck in the 'on'
position and overheat, posing fire and burn hazards to consumers," the
company announced on its website.
Harbor Freight Tools has received 25 reports of the drill switch
overheating, according to the U.S. Consumer Product Safety Commission.
Six of those reports included burns to the hands and fingers; five
reports included minor property damage.
The drills being recalled were sold at Harbor Freight Tools stores
nationwide, in the company's catalogue and on its website between May
2011 and September 2015. The item numbers on the recalled drills are
68239 and 68287.
For more information, call Harbor Freight Tools at (800) 444-3353 Monday
through Friday between 8:00 a.m. and 4:30 p.m. PST or send an email to
Sounds like the switch may only be one of the problems with the drills. If
they will overheat from a stuck switch they will probably overheat from
extended use. Remember the old battery technology days when you would run
the drill until the battery was completely dead to guard against memory
recharge problems? I recall the drill running for quite a long time
performing that task.
But genrally not under load - and without load motor current is low,
and heat produced is also low as a result.
Also, it is very possible the drill switch is "sticking in the on
position" due to a fault that causes high resistance in the switch,
causing the switch to heat up, not the motor -and the localized
heating creates the fire and burn hazard. (within the switch)
From the recall site - "The metal components of the black trigger
switch can wear down over time and with extended use allowing for
metal to metal contact, presenting an overheating or burn hazard"
It is only those with a black switch - the grey switch is not involved
in the recall. To date ONE person has reported minor burns to the
finger from a defective drill......
On 12/12/2015 11:30 AM, firstname.lastname@example.org wrote:
I suspect that if you could not shut the drill off because of the
defective switch that the drill HF drill would probably also not be
under a load. And popping the battery out would solve the shut off problem.
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