I almost brought another dremel thanks for making this video you saved me money

After heavy usage removing old grout, my 4200 on/off switch would not slide easily. Too much dust got underneath the switch. Thank you for clearly explaining how to disassemble. Blew the dust/dirt out of the inside and it works like new again. Saw what you were saying about the switch. Works ok now, but anticipate the same problem you fixed with yours probably later on. Will know what to do if/when it happens. Thanks again!

Thanks to you I have a working 4200 again! This is the second Dremel I had stopped working out of the blue. The first one is gathering dust somewhere. After watching your video I was able to revive them both!!

The heat shrink wasn't necessary. With the heat gun, heat the area where you placed the heat shrink tube. Rebend the areas in a downward position and use cold water to cool off. Reassemble it and works like a charm!

Might be questionable but it saved my Dremel from a short trip to the dump. Now runs better than new. Thanks, mate, from across the pond.

Awesome! My Dremel had exactly the same problem. I'd chucked it in the "to fix later" drawer 4 years ago until i came across this video.

Lent my 4200 to my neighbor and it came back the next day with the same issue. I'm going to try this. Thank you for uploading

My 4000 model has the same issue. Thanks for the video. I’m gonna perform some Dremel surgery.

Thank you for putting this video out. My 4200 quit two days ago, so I will try this tomorrow.

Great idea with the heat shrink tubing! I have had this problem for a few years with the 4200 and usually when I take it apart and put it back together, it ends up working, but it seems to never last and the most recent time, I haven't been able to get it to work again, so the heat shrink tubing should work great! Thanks! EDIT: Turns out it didn't work. My heat shrink tubing ended up being too thick and I couldn't move the switch at all. I ended up using several layers of packing tape and that seems to have done the trick.

You were spot on and solved my problem - thanks a million !

Thank you, Richard!

I’m having a similar trouble with my 400xpr, it just reached the point where it won’t turn on. I was checking out the brushes and after I put both covers back on it wouldn’t go unless I press down on the cover. I’m not sure how to fix it

Dremel seems to have trouble with the swtiches. I recently bought the brushless 8260. The switch is very flimsy and sinks into the tool when switching. I returned it, got another one, same issue.

You helped me I appreciate it. 👍

That worked perfect! Thank youuu

My dremel 4200 nose cap went lose ( thread ) . I cant remove it to change the attachment. How can i fix it? Thanks to those who will reply.

ha ha, fixed in newer models? I just bought new 4300 and it seems to be the same problem out of box... :(

Hello Dremel...I have bought your model 3000 ....6 months ago ...now does not switch on at all ...please advise. Really assumed this was a quality product as per my German Bosch Drill ...20 years service and no problems...what is the story with your quality ??? Please advise soonest ...

Sir I need ur help please tell me which kind of dremel I should buy ?

Thanks man

I don't know why they don't just use a little speed lever, like you get in the 300 & the Multi-Pro. This works better than a seperate on/off switch IMO. These new switches are badly designed.

Another alternative is to carefully place a small drop of adhesive (epoxy like) on the blue plastic piece where it touches the black switch. Let it dry completely of course.

I would have just heated the blue plastic with your heat gun, & bent it a bit.

A disappointing design by Dremel that is prone to failure.