That was a terrific video. The explanations of your reasoning and each step of the repair were clear and informative. Thank you for your patient, friendly and helpful presentation.

Thank you! I was really sad, my dremel just overheated, thought it was ready for the bin, found your video and ordered the part for $10 including shipping, not sad anymore, Thank you!

You saved my Dremel 4000, Ms. Karen. For that, I am extremely thankful. Thank you for the video!

You are awesome! Thank you so much. This information is much harder to find, than most people realize. Thanks again.

Thanks a ton. My Dremel 4000 needed just that! Back working after a whole 8 months or more.!!

I replaced the brush in my Dremel twice over a few yr period. The third time, I found the brush melted into the area housing it, and I was unable to remove it. My Dremel was slightly smaller than yours. I never did replace the thermal fuse. I invested in a lot of the attachments for that Dremel, so still hanging onto it. I've since gotten a larger similar tool, but someday will go back at the old Dremel for another go at fixing it. Thanks for this video!

Karen you lady are awesome ... I almost gave up on my dremel 4000, till you mentioned that bloody thermofuse... you saved me a good $240. I can't be thankful enough .. you ROCK! for those who don't have a fuse replacement, you can simply bypass it by soldering a high Amp wire at least 25A across the thermofuse .. this is NOT recommended though as you'd lose the thermal protection, but it'll get you back up immediately

Thank you Ms Karen, you have also saved my Dremel 4000. Much appreciated.

You are common sense, smart and you have a delightful attitude I so enjoyed this video

What you do to hear the counter-clockwise click to screw the screw in is great. Not everyone knows this process. Congratulations.

Many thank's Karen you save me!!! And my dremel. I love diy, and try all the time to repair before putting in garbage. So i'd tested this part and observed no continuity thru them but I did't know it was a fuse! Thank again and you have now a new subscriber from France😍

Hi Karen, love your thought process! Unfortunately, I seem to think that I can fix anything, which can sometimes be my undoing, but for the most, with patience and confidence manage to concur enough to try something else if the need arises. Your living proof that if you grab it by the horns, and give it a crack, weather we’re familiar with what’s in need of repair, or just going in by braille, we can fix a lot of things that many people wouldn’t even attempt. Anyway, love the vid….well presented and can tell straight away that your there to help people and not to impress them. From neurosurgeons to tree surgeons, we all need something repaired or prolonged for many different needs….wants, ect:

Never broke my Dremel but I enjoyed the video. And I know what to do if I do. Great job! Thank you 🌹

Your video helped me fix my Dremel. Thanks.

Great video, you fixed my Dremel 4000 after several tries!!! Awesome.

I followed these instructions to take apart mine and test the thermal fuse. That wasn't the problem, but the Dremel worked again when I reassembled it, so thanks!

Awesome and so kind teacher, thank you for being you.

You're amazing! I feel inspired to fix my Dremel Multi-Max after watching this :)

Excellent video, I learned a lot. Thank you so much.

thank you so much same problem on my dremel overworked great video intelligent woman

Thank you! I didn't think about a thermal fuse! 👍👍👍

Thank you so much!!! What a great help this was!!!

WONDROUS WONDER WOMAN!! Your philosophy is spot on ... if it's broken, you can't make it worse. Open it up and have a look. I cannot understand why everybody does not understand this.

Great video! So clear.. thank you!

My 4000 stopped working too. I brought a new fuse and followed your instructions and changed it. When I turned it on it worked but when I turned it off it didn't go back on again. So I'm thinking something is blowing the fuse. Thank you for your video it was great. I probably wouldn't have attempted it if it wasn't for seeing you do it. I will get another fuse take it apart again and see what happens.

Hey Karen, your Vid was a right on spot. Now i know where to start the repair. People be ware of the fact that you cant cut 1mm titanium for prolonged time even with the cool dremel "max" accessories ;o.

Nicely done Karen! You might consider buying a Foredom instead of your next Dremel. Far more torque and Far less noise. They come with a foot pedal to control speed. Great for light or heavy duty cutting and polishing. Tom (Sandman Overhaul)

You are awesome! First time viewer and I’m very impressed with you., Dremmel working now to

I own a dremel 4300 and I’m going to try this, thank you so much,

Great video. Really helpful. Thank you for your video.

Hi Senora Karen , Namaste from India, I do own one such unit here , had to woo my fairer half to allow me to buy the dream tool, basically girls are ever forgiving of the wayward ways of men in general & know that boys are always on the look out for some silly reasons to buy a tool they fancy, anyway , in India we have limited presence of DREMEL, & it is hard to find the spare parts or accessories for DREMEL , just pray for us in your spare time so that lay persons like us do not encounter such situations as you did , may God bless you!

"Videotaped" staying on to watch. Looks promising! Rock on!

Thank you Karen! I’m going to give it a try! Karen in Guatemala.

Very good video!!! I have to do a tear down, but this was very helpful!

Thank you, this saved my Dremel 4000

Thanks Karen! 👍

Ms. Karen my dremel stop working over the weekend and I looked at the bushes and they looked great since I have only used my tool maybe 4 times since buying it a year ago. My little heart just dropped. I KZfaq and found your video. I ordered the parts and I hope that what you did is the problem. I’ll let you know in a week when the part comes in

THANK YOU! I'm going to try this on my 27 year-old Craftsman rotary tool. I'd hate to get rid of it.

It'works!!!! You are an hero! Take care, against COVID it's not question of fuse😊 even the symptoms include tempetarure!!!! Thank's again for charing

wait I love you you're too amazing and wholesome

Thank you. Have the same problem the second time. Now I'm trying a 121 degree fuse. Maybe it will light up, but that is the last time I will use a dremel.

Just got mine today and turned it on to test it works. Well I ran it and was impressed with the low noise level and feel/balance of it, All good, however when after maybe its first " dry run" which lasted all of a minute. I was really surprised to feel just how hot the collet and shaft were! Great video and I think I will be needed to follow your instructions sooner than I think. If I keep the thing? They are"hobbyist tools" and I get that no problem, but over heating WITHOUT a load is a bit bs me thinks... Maybe I should of got a Dremel... Oh wait. Thankyou again for the great video 👍

You are awesome! Thank you!

Thanks it’s very helpful you save my dremel..

that was a great help thank you millions

I had no choice because the bolt head that had to be cut off was above the muffler and all the framing was really tight and nothing fit in that space so I used the flexible extension shaft you can get for it and used that until the Dremel burned out - then I went with it by hand with a hacksaw blade in the cheap plastic handle thingy for a few hours until 10pm and then went in to go to bed - and then I started the next day with a small cordless drill Dad bought and that fit in, using the dremel cutoff discs because the 3" cut-offs are too big for the space. Finally. I don't ever want to do that again. But the hitch receiver is off. I'm going to try this and fix the Dremel. Thanks Karen. And also Hi, you remind me of Mrs. C when I was a kid. She's really nice, I like her.

Thanks. You might help me here. I have Dremel but not exactly like yours and does not have heat protection. Mine is 110 volt and by mistake plugged it into 220 volt and just stopped working with no smell or indication of burning. What do you think has gone wrong and how to fix it. I check all sort of connectivity inside and all okay

Thank you. Very helpful.

Great video& repair,Godbless

Wow, that is a BIG bolt!

Fixed!! Thank you!!

Thank You, now i found the problem !

You're amazing !!

I've subscribed, TY awesome tip.

Thank you for illuminating me on the voodoo inner workings of my wife's dremel, I really appreciate your help!

I'm impressed

Not my model but thank you, I learned about the thermoresistor.

Hi, thanks for the helpful presentation, you save my dremel 4000,

Great video and you look such a lovely lady, but you get a lifetime guarantee with Dremel, so DON'T chuck them away 👍

Thanks, it at least helped me to know how to open it (and not break it). Turns out there wasn't anything wrong with mine, it simply unadjusted a little and the power button couldn't be pressed. I still ordered some graphites, just in case.

im trying to purchase the fuse to see if that fixes my issue but i cant find the one with the brusholder

Great video thanks

Can you get self-resetting thermal fuses? I've never come across them..

I am about to open up a dead Dremel 4000 too. I also suspect the thermal fuse melted from overheating. But on the replacement parts list that came with the Dremel, there is no thermal fuse or switch listed. So I am curious where/ how you got your replacement.

The carbon brush set are both worn down and rounded on the edges in my Dremel 4300. But could that cause the power switch to stop turning the motor on and off? It appears this model doesn't have a Brush Holder Thermal Fuse. It isn't locked up, just stoped running while I cut into an exterior vinyl siding corner with a Metal cutting Dremel wheel. (Thanks for the video.)

Is there a tool that’s good for getting through thick metal in tight places? Im not sure an angle grinder would be able to fit where i need it to.

Great video. I'm so annoyed, I have the same Dremel and model and my brushes tops don't just unscrew or even have a flathead notch. I gotta get one of those fuses too. Thanks very much.

Thank you for sharing this Karen. These parts are very difficult to find in the UK. Although I found one seller on ebay, using the reference number you kindly supplied. If I need to buy the fuse to solder in future, would 10amp be compatible?

I was using my dremel with now problems, turn off, i left it under sunlight and when I wanted to turn it on again is not working anymore. I dont know if sun heat can damage this but I will check it. I plan to replace this original dremel fuse, as I am not in US to get this part, using a 110C or more fuse. Can you help me with the current data of original fuse so that I can buy same stuff? many thanks in advance.

Thanks!

Thanks!!

If you are making this repair do yourself a favor and buy a replacement brush holder part instead of soldering in a fuse. If you must solder a fuse, use a small vise grip plier as a heat sink to avoid overheating the fuse. Also, buy a 5A fuse instead of a 10A fuse which is much easier to find. The 10A fuse has a larger wire and is more difficult to form and work with to get the connections lined up for assembly.

4000's not starting. Great philosophy. Rather than trash it, will learn from you! :D

Was cutting through 5mm thick cast iron plate for fire and smelt burning smell... I will test it for this fuse now Where do you get them from..

Excellent

i recently used my dremel 4000 for a big job, hopefully this will save it

Where can you get the brushes?

my dremel is working but has problems with starting and overheating , i try out ur fix ,and termofuse is providing electricity and multimeter beeping , i got no clue what else , brushes r still quite big ....

Thank you!

Hi can you please give me the part number for the brush holder watching from South Africa thank you for your help

Would have been so nice to say where you bought that replacement part

where did you buy the thermal fuse and harness

you would know if the dremel is overheating as it would be blowing scalding hot air out the vents.

Nice !

was not my problem, but i watched until the end anyway. That repair is in the bank now. cheers.

Awesome!

My 4300 only turns on when it wants to. I don't know what to do about it. 😥

What model Dremel is that?

im about to try this♡♡♡

Great video! I think you nailed the issue I have with my Craftsman. Could you say WHERE you bought the fuse, please?

Where can I get this fuse?? I am in India and I can't get it it comes in a packet of 100 pieces . plz help. Can anyone help me with this. I have the same issue.

While in use, great care must be taken to not block the air cooling ventilation

Hairdryer thermal switches reset now why didn't Dremel design it with one of those old bad boys.

I’m begging,😢 what’s the part number? Please😊

Ok howzit everybody anyways I got a DREMEL ULTRA SAW brand new n I used it for a little while n all of a sudden , it stop working. I know there is power feeding the dremel caz I hear it wanting to turn the blade but it's not . Can anyone kindly help me thanks

Dremel wanted me to just send them my Dremel after it was smoking hot. After a lot of trying to find out if it was covered under warranty (no), and try to get a replacement price if the unit was destroyed ($54, at this time), I decided it would be better for me to at least open it up and look for myself before sending it in. To note, when the Dremel was smoking I unplugged it and queched it in water. This could have destroyed the unit further but I considered the importance of preventing a fire hazard more important than the machine. Absolutely make sure the unit is unplugged before quelching in water. Also understand that the water will become boiling hot with hazardous steam! Take appropriate precautions to prevent injury. That said, my thermal fuse never broke. After though cleaning and drying, I let it set open in moisture absorbing beads for a couple days (to make certain no moisture was in the electronic parts to short out). I'm glad the unit is functioning again with no need to spend money. I am concerned however that the thermal fuse didn't break in what obviously was over 100°C since the water was boiling. I'll have to reach out and see if I can buy a new thermal fuse just to make sure my unit remains safe in the future.

My brushes won't give. They seem to be stuck

Wow for a lady you are very knowledgeable a whole- lot more then I am I REALLY wish I had you AROUND LOL THAT'S ** IMBARISING ...LOL IM ALWAYS TAKING THINJS APART N DOING PROJECTS N NEVER FINSH THEM NOR PUT THEM BACK TOGETHER N MY WIFE OOH GASH ABSOLUTELY WSNTD TO KILL ME

U R Gr8

You don’t seem like the typical “Karen”. Ha. You attempted to “grind” the bolt, not “drill” it. Good video. Thank you. My Dremel just stopped working. To cut the bolt you can also use a Die Grinder or metal band saw.