Dremel Clone From China. - Page 1
Forum section: electronics / general

author: T4P
author_rank: Super Contributor
timestamp: May 06, 2012, 05:50:42 am
content: Well i'll be damned, First the Yihua 858D burnt its triac now this.It's got power, remains cool most of the time.It worked well but i was always wondering, why does it wobble so badly when i put a medium size nylon brush recently? And started heating up very quicklyThis was so the reason:It's highly used and now the right side carbon brushes BROKE AND NOT WEAR OUT?!*i didn't include the brush i was using, it's a 38mm nylon brush

author: Mint.
author_rank: Frequent Contributor
timestamp: May 06, 2012, 07:27:21 am
content: I have a Dremel and I love it! It is excellent value for the money and I don't see why people do not just buy a proper Dremel, but a cheapie that would wear out pretty soon. The only complaint I have is the tips for the Dremel are so expensive!

author: T4P
author_rank: Super Contributor
timestamp: May 06, 2012, 08:02:00 am
content: Quote from: Mint. on May 06, 2012, 07:27:21 amYes but this one has served me 50 hours runtime about the time a dremel's brushes wear out and it only cost me 20SGD ( I bought in while in china )The dremel's bits are a bit overpriced AFAIKI only need the find the original's brushes since it's almost the same.

author: sonicj
author_rank: Frequent Contributor
timestamp: May 06, 2012, 08:22:44 am
content: Bummer!My dremel stylus gave up the ghost after about 3 years of abuse. Batteries died + front brass bushing of the johnson motor wore considerably. I liked the ergonomics of it, but the case always felt loose, like the motor wasn't seated properly in the case or something.My latest dremel, the 8000, is quite disappointing. The whole thing shakes like the rotor is not balanced. Plus, there is no way to charge the battery without removing it from the tool. Which would be fine, if they included another battery... but they did not. I can't just toss it on the charger and have it always ready like the stylus. Additional batteries are $40 a pop. The ergonomics suck. The battery feels loose and wobbles around when clipped into the tool. Charge rate is a miserable 500mA. I think what pisses me off the most though, is that they do not include a keyless chuck with the tool. What ever the price of the tool is, add $10 to it because the greedy corporatedecision makersjerkoffs figured out how to squeeze another $10 out their customers by including a PITA 1982 keyed chuck with their fancy modern 2012 lithium-ion technology powered rotary tool.Like Mint. mentioned... The bits are outrageously priced. The abrasive buffs and wires wheels are what I use the most and they tear up with the quickness. I have been meaning to find a alternative source...The diamond point grinding bits from Harbor Freight are excellent btw.Link-sj

author: sonicj
author_rank: Frequent Contributor
timestamp: May 06, 2012, 08:25:51 am
content: Quote from: Dave.S on May 06, 2012, 08:02:00 amRC Hobby Shop

author: SeanB
author_rank: Super Contributor
timestamp: May 06, 2012, 09:31:22 am
content: That one was not made properly, most likely it was not sintered long enough, or was too cold. I often find small brushes like this wear out, and can be hard to find. Often I end up taking a larger brush from a dead universal motoe and filing it down to be a good fit in the brush holder. You can see this one was on the small side of the tolerance, as the chattering has worn marks into the side.When you put new ones in make sure you clean the bushes and relube them, along with the felting pad that is the oil reservoir. I use a synthetic oil for this, but only because i had to buy a 20kg drum of the grease, and the oil tends to separate out after a year of standing. 5ml in a syringe does a lot of motors. Another oil I use is a refrigeration napthetic oil used with r22 rotary compressors.The commutator will benefit from cleaning and undercutting the insulators. I use 1200 grit waterpaper and light rubbing, then clean with IPA, then lube the shaft before reassembling the unit. Note no oil on the commutator, clean with a clean dry cloth after assembly to remove contamination.

author: T4P
author_rank: Super Contributor
timestamp: May 06, 2012, 09:48:27 am
content: Quote from: sonicj on May 06, 2012, 08:22:44 amMy rotary tool is still useful but only for small bits, i have a set of 30 diamond burrshttp://www.aliexpress.com/fm-store/801267/211100454-536499434/30pc-Diamond-Burr-Point-Set-Rotary-Tool-for-Die-Grinder.htmlThey are a good store even though it came in extreme packaging.

author: Spawn
author_rank: Frequent Contributor
timestamp: May 06, 2012, 02:48:48 pm
content: Dremel brand on a multi tool won’t make it best one in the world guys, I learned after 2 Dremels back in 90’s when I was doing a lot case moding and reworking my own water cooling blocks after milling. After burning 2 Dremels a colleague of mine recommended me a Ferm, I still got the Ferm after almost 15 years and it was only 40 Dutch florins (around 20 Euros) back than with a flexible axle and a lot tips. I was always under impression that Ferm was crap tool, it is still if you ask me but this multi tool is really robust.Later on I got another Dremel because Ferm one is to loud if I do some work at nights, for dirty and heavy work I still use the Ferm.About tips, I still recommend the Dremel ones, they cost a lot indeed but they last a lot more than any other brand I have tried, even Proxxon tips are not so good as Dremel ones, at the end Dremel tips come cheaper.Ferm is slightly bigger and it is not handy for precision work, I still can use its flexible axle but Dremel Flex axle is still finer.Here a photo of my Ferm and Dremel next to each other: