I repaired the switch instead of buying a replacement. First off - thank you for this great video! I didn't even search for it but it was recommended to me. It gave me the motivation to take apart my Dremel with speed control malfunction. I went a few steps further and repaired the switch. Here is how: The switch housing comes apart long ways. Just pry them apart, not much effort needed here. The blue slider switch (mine was red) falls out along with the rocking switch mechanism that makes contact with the chip board. Examining the contact points on the chip board, the electric runways were covered in black gunk of some kind - which was causing the Dremel to run either full power, or off. I used rubbing alcohol and q-tip to clean the gunk off the chip board. That was it. To put it back together, slot the two parts of the switch in their respective slides and put the switch housing back together. The lower switch mechanism clips into the blue (or red in my case) sliding switch like a rocker arm.
I did the same for my Dremel 300. I cleaned the printed carbon & metal tracks, & the brass runway with IPA, and also the brushes. The two smaller brushes needed to be bent slightly to the side, as they were tending to drift to the side off the tracks. I also bent them very slightly to make stronger contact with the tracks. After that, a bit of Silicone grease for the sliding plastic parts & reassembly. It works great now!
Thanks for the video. One thing I would like to mention. Before replacing the speed controller, you might want to mention to your viewers that they should first check for spring and motor brush separation. I was very frustrated earlier today when doing a project and I noticed that my tool had very little power and the speed controller only worked on a few settings. At first I thought it was time to replace the controller. Upon further examination I noticed that when I pressed hard on one of the blue motor brush caps the tool came back to life and worked on all settings. I unscrewed both caps and noticed that one of the springs when pulled came out with the brush attached while the other came out but the brush remained in its slot. I gently screwed the spring back into the brush until the spring re-seated and would turn no more. Now solid contact was once again being established. I re-started the tool and it worked 100% perfectly. Again, this might not be the problem that everyone has but on lightly used units like mine that do not have that many hours on them it worked like a charm. After seeing your video, I plan on purchasing an extra speed controller and springs and brushes to have on hand should I ever need to do the job in this video. Nice Job & Thanks once again!!!!!!!
@@andreashenriksen1485 Unscrew the blue caps and check to see if the springs have separated from the magnets. Poor contact will produce very poor performance. Screw the springs back onto the brushes aka magnets. Place back into holes and replace the blue caps. Good luck....
@@911naimplate the brushes are magnets instead of just being a square carbon brush. ? now i gotta go tear mine apart & see... lol... it will be the first time i seen magnets used for brushes , to ride on the commutator...
I have the same model dremel and it lasted longer than yours before the speed control work intermittently. I am glad I found your video and will replace my motor speed control instead of buying a new dremel. Thanks for the very helpful video with the part number.
BECAUSE OF YOU AND YOUR WIFE I SAVED A LOT OF MONEY BECAUSE I HAVE A DREMEL AND IT STOP WORKING AND SAW A NOTHER VIDEO ON YT HERE ON HOW TO GET IT TO WORK AGAIN ,AND I WAS SO HAPPY I GOT IT WORKING BUT BECAUSE IT WAS JUST ONE SPEED I WAS THINKING ABOUT BUYING A VERITABLE SPEED MODEL BUT LIKE I SAID THINKS TO YOU AND YOUR WIFE'S IDEA I HAVE EXACTLY WHAT I WANT AFTER I TOOK YOUR IDEA AND DID IT TO MY DREMEL I GOT SO EXCITED ,NOW I JUST HAVE TO PLUG IT UP AND REV IT LIKE A CAR ENGINE I 😆 LOL THANKS SO MUCH😃😃!!
I took apart my Dremel 395 and found out one of the wires to the switch was loose. I tried to put it back in but it keep coming loose. I put a dap of epoxy on both wires and wait until it dried. You mention in your video it was hard to keep the spring align during reassembly. I put a piece of scotch tape onto the aligned spring and detent to keep them both aligned. Make sure the tape is long enough to be pull out once both halves of the housing are aligned. I reassemble, check rotation for binding and reinstall screws. Turn on dremel and intermittent power is fixed. Again thanks for the video that gave me confidence and things to watch out for during disassembly and reassembly. I did not have to replace the switch assembly.
On my Dremel 300, the top side of the field coil assembly has an adhesive rubber cushion, so you can tell which way rund the coil goes. The rubber cushion is on the opposite side to the speed switch.
pocketweez On my 300, the new switch can attach to the back of the motor correctly or 180 degrees from that. If attached 180 off, the motor is bound up and will not work.
I thought my variation speed part was worn out, My Dremel only runs with maximum speed. Fortunate I clean inside with alcohol and, ........its works perfectly again, without spends.
Good video. This is very similar to the 3000 and the same principle applies, though with the 3000 you don't have the issue of the locking pin. It is part of the housing, so yay for me. I first tried new brushes to no avail so I have a new switch that should arrive tomorrow. Hopefully that solves the issue. Total cost of brushes(taxes and shipping included) was $9.28 from Widget Supply and the switch was $12.50 from M&M Parts. I see True Value had a special on the 3000 for Black Friday where after everything was said and done it would have been $39.99 plus tax and shipping if you went that route. Some less technically inclined, or don't want to take the time to mess with it might be better off just buying a new unit entirely unfortunately. I will fix mine this time because I spent the time researching & playing with the unit, but even I would have been "better off" just buying a new one.
I bought a Russian but made in China Dremel type tool. It has 9 speeds, but when I select higher then 2 speed its sound increase so much along with speed and vibration. I have not checked it at speed 9, but I suspect that at that speed I will be deaf by its sound. Lastly when I use and its speeds drops I noticed that its speeds increase so much than when initially it was running. Can anyone help me or all Dremel are like this.
Muti ur, you ask questions, but have provided no useful information. "Russian but made in China" is not a very useful description! You ask for advice, and mine would be, if you buy the cheapest crap, then don't be surprised when it does not work well.
When I increase its speed over 3 its sound and vibration increase too much. I want to know if this happens to all rotary tools. It price is average and most sell their average at that price
@@mutiur7396 , ALL rotary tools are likely to get noisier and less smooth as speed increases, because any gearing makes more noise with speed, as does the motor fan, and unless every rotating part is precisely balanced (unlikely at the hobbyist price point) there will also be more vibration. But there are higher quality brands and lower quality brands.....
I bought a "dremel" type of rotary tool from china but it has no speed control and spins at full blast. Dangerously dangerous. Is there a way to add speed controller to it? Thank you.
EMIL SIGN-AUT, not sure why you are YELLING...? I tested my speed control by cleverly noticing that my Dremel tool was only running at one speed when it should have been variable speed.....
I repaired the switch instead of buying a replacement. First off - thank you for this great video! I didn't even search for it but it was recommended to me. It gave me the motivation to take apart my Dremel with speed control malfunction.
I went a few steps further and repaired the switch. Here is how:
The switch housing comes apart long ways. Just pry them apart, not much effort needed here.
The blue slider switch (mine was red) falls out along with the rocking switch mechanism that makes contact with the chip board.
Examining the contact points on the chip board, the electric runways were covered in black gunk of some kind - which was causing the Dremel to run either full power, or off.
I used rubbing alcohol and q-tip to clean the gunk off the chip board. That was it.
To put it back together, slot the two parts of the switch in their respective slides and put the switch housing back together. The lower switch mechanism clips into the blue (or red in my case) sliding switch like a rocker arm.
I will try to repair my speed control switch now too. Thanks.
I did the same for my Dremel 300. I cleaned the printed carbon & metal tracks, & the brass runway with IPA, and also the brushes. The two smaller brushes needed to be bent slightly to the side, as they were tending to drift to the side off the tracks. I also bent them very slightly to make stronger contact with the tracks. After that, a bit of Silicone grease for the sliding plastic parts & reassembly. It works great now!
Thanks for the video. One thing I would like to mention. Before replacing the speed controller, you might want to mention to your viewers that they should first check for spring and motor brush separation. I was very frustrated earlier today when doing a project and I noticed that my tool had very little power and the speed controller only worked on a few settings. At first I thought it was time to replace the controller. Upon further examination I noticed that when I pressed hard on one of the blue motor brush caps the tool came back to life and worked on all settings. I unscrewed both caps and noticed that one of the springs when pulled came out with the brush attached while the other came out but the brush remained in its slot. I gently screwed the spring back into the brush until the spring re-seated and would turn no more. Now solid contact was once again being established. I re-started the tool and it worked 100% perfectly. Again, this might not be the problem that everyone has but on lightly used units like mine that do not have that many hours on them it worked like a charm. After seeing your video, I plan on purchasing an extra speed controller and springs and brushes to have on hand should I ever need to do the job in this video. Nice Job & Thanks once again!!!!!!!
what do you mean by "motor brush"?
@@andreashenriksen1485 Unscrew the blue caps and check to see if the springs have separated from the magnets. Poor contact will produce very poor performance. Screw the springs back onto the brushes aka magnets. Place back into holes and replace the blue caps. Good luck....
@@911naimplate Oooh okay. Mine are not screwed in. I think mine's a bit different from this one in the video. But anyways! thanks!
@@andreashenriksen1485 Welcome, good luck : )
@@911naimplate the brushes are magnets instead of just being a square carbon brush. ? now i gotta go tear mine apart & see... lol... it will be the first time i seen magnets used for brushes , to ride on the commutator...
I have the same model dremel and it lasted longer than yours before the speed control work intermittently. I am glad I found your video and will replace my motor speed control instead of buying a new dremel. Thanks for the very helpful video with the part number.
My solution was to hard wire the motor at full speed, then plug it into a sewing machine foot pedal. So, it's even better than before.
Lol. This is awesome.
Thanks. My wife is the one who came up with the idea. She's awesome.
BECAUSE OF YOU AND YOUR
WIFE I SAVED A LOT OF MONEY BECAUSE I HAVE
A DREMEL AND IT STOP
WORKING AND SAW A NOTHER VIDEO ON YT HERE
ON HOW TO GET IT TO
WORK AGAIN ,AND I WAS
SO HAPPY I GOT IT WORKING
BUT BECAUSE IT WAS JUST
ONE SPEED I WAS THINKING
ABOUT BUYING A VERITABLE
SPEED MODEL BUT LIKE I
SAID THINKS TO YOU AND
YOUR WIFE'S IDEA I HAVE
EXACTLY WHAT I WANT
AFTER I TOOK YOUR IDEA
AND DID IT TO MY DREMEL
I GOT SO EXCITED ,NOW
I JUST HAVE TO PLUG IT
UP AND REV IT LIKE A
CAR ENGINE I 😆 LOL THANKS
SO MUCH😃😃!!
Ok @gutpunch no neeed to shout mate. You might also like to check your spelling before you send off your fascinating texts in future.
I took apart my Dremel 395 and found out one of the wires to the switch was loose. I tried to put it back in but it keep coming loose. I put a dap of epoxy on both wires and wait until it dried. You mention in your video it was hard to keep the spring align during reassembly. I put a piece of scotch tape onto the aligned spring and detent to keep them both aligned. Make sure the tape is long enough to be pull out once both halves of the housing are aligned. I reassemble, check rotation for binding and reinstall screws. Turn on dremel and intermittent power is fixed. Again thanks for the video that gave me confidence and things to watch out for during disassembly and reassembly. I did not have to replace the switch assembly.
On my Dremel 300, the top side of the field coil assembly has an adhesive rubber cushion, so you can tell which way rund the coil goes. The rubber cushion is on the opposite side to the speed switch.
Very helpful. Thanks. Appreciate the photos.
pocketweez On my 300, the new switch can attach to the back of the motor correctly or 180 degrees from that. If attached 180 off, the motor is bound up and will not work.
Can a two speed dremel be converted to a 5 speed by replacing a two speed switch with a variable speed switch?
Great video and very well explained
My dremel is starting to occasionally change speed randomly, could replacing the switch fix this?
rac 4714, there is a good chance that the speed controller is intermittent/worn, and replacing it might solve the problem.
I thought my variation speed part was worn out, My Dremel only runs with maximum speed. Fortunate I clean inside with alcohol and, ........its works perfectly again, without spends.
Good video. This is very similar to the 3000 and the same principle applies, though with the 3000 you don't have the issue of the locking pin. It is part of the housing, so yay for me.
I first tried new brushes to no avail so I have a new switch that should arrive tomorrow. Hopefully that solves the issue. Total cost of brushes(taxes and shipping included) was $9.28 from Widget Supply and the switch was $12.50 from M&M Parts. I see True Value had a special on the 3000 for Black Friday where after everything was said and done it would have been $39.99 plus tax and shipping if you went that route. Some less technically inclined, or don't want to take the time to mess with it might be better off just buying a new unit entirely unfortunately. I will fix mine this time because I spent the time researching & playing with the unit, but even I would have been "better off" just buying a new one.
I bought a Russian but made in China Dremel type tool. It has 9 speeds, but when I select higher then 2 speed its sound increase so much along with speed and vibration. I have not checked it at speed 9, but I suspect that at that speed I will be deaf by its sound. Lastly when I use and its speeds drops I noticed that its speeds increase so much than when initially it was running. Can anyone help me or all Dremel are like this.
Muti ur, you ask questions, but have provided no useful information. "Russian but made in China" is not a very useful description!
You ask for advice, and mine would be, if you buy the cheapest crap, then don't be surprised when it does not work well.
@@youtuuba Bnktop brand
When I increase its speed over 3 its sound and vibration increase too much. I want to know if this happens to all rotary tools. It price is average and most sell their average at that price
I need confirmation about last part of my question that do all rotary have same speed response under load
@@mutiur7396 , ALL rotary tools are likely to get noisier and less smooth as speed increases, because any gearing makes more noise with speed, as does the motor fan, and unless every rotating part is precisely balanced (unlikely at the hobbyist price point) there will also be more vibration. But there are higher quality brands and lower quality brands.....
I bought a "dremel" type of rotary tool from china but it has no speed control and spins at full blast. Dangerously dangerous. Is there a way to add speed controller to it? Thank you.
Dremel use to offer a pedal tool speed controler. Or,, you can do one using TH-cam tutorials ...
Find a sewing machine foot control.
Excellent tutorial!
HOW DID YOU TEST YOUR SPEED CONTROLLER IF ITS GOOD OR BAD?
EMIL SIGN-AUT, not sure why you are YELLING...?
I tested my speed control by cleverly noticing that my Dremel tool was only running at one speed when it should have been variable speed.....
SORRY NOT YELLING , I JUST HAVE A BAD VISION THAT IS WHY THEY ARE ALL CAPITAL LETTERS.
Good video. Thanks.
THANK YOU MUCH
Replace speed control in dremel multi max
Edward Luhn, no, I don't think that I will comply with your command.
You sound like Iggy Pop
jtreg, useless comment of the day.