So I got a wood cutting blade for my dremel in the mail today from jackstoolshed.com.
I put a blade in and tightened it down then revved the dremel up to full speed.
I guess it wasn't properly balanced because it immediately bent the shank albout 45 degrees from the centrifugal force and then it was really unbalanced.
In the process it sawed a nice cut down to the bone on my knuckle.
Hopefully the company I bought the chitty thing from will refund me.
the shaking was so severe that it bent something in my dermel and now it is out of balance so I may try to get them to cover that too.
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10500.jpg)
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10501.jpg)
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10505.jpg)
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10504.jpg)
ouch ! even if it were placed right next to the collet, i'd bet a vibration would be pretty bad at 5-10k rpm.
good thing you didn't loose an eye !
no kidding about the eye. I had it set on 30k rpms, it was all i could do not to drop it.
Quote from: ohgood on June 27, 2009, 06:44:15 PM
ouch ! even if it were placed right next to the collet, i'd bet a vibration would be pretty bad at 5-10k rpm.
good thing you didn't loose an eye !
Dremel hits 28,800 in the old days.
I had a cordless - prolly still do but haven't used in years due to having a house since 96 - but it was my slow dremel - aka - it had a slow setting - yes a paltry 15,000 rpm. The second one was 30,000.
In the old days the dremel's were better too. I am using my 15 yr old crastfman, but have busted the 3 year old dremel.
Cool.
Buddha.
Quote from: The Buddha on June 27, 2009, 07:19:22 PM
Quote from: ohgood on June 27, 2009, 06:44:15 PM
ouch ! even if it were placed right next to the collet, i'd bet a vibration would be pretty bad at 5-10k rpm.
good thing you didn't loose an eye !
Dremel hits 28,800 in the old days.
I had a cordless - prolly still do but haven't used in years due to having a house since 96 - but it was my slow dremel - aka - it had a slow setting - yes a paltry 15,000 rpm. The second one was 30,000.
In the old days the dremel's were better too. I am using my 15 yr old crastfman, but have busted the 3 year old dremel.
Cool.
Buddha.
ive Got a flex shaft on my jewelry bench made by foredom. wiht a pedal speed lever which goes from 400-30k, same wiht an identical unit at my home. and balace is key. sometimes hole in saw, is too big for shaft etc ive actually made a spacer out of superglue. mic'ed the gap so all sides were equal, and vibes were a minimum. 15 mins worth of work;. but at 30k when shaZam! breaks it can and often does get messy http://cgi.ebay.com/rle-FOREDOM-TX-300-1-3-HP-w-30-HANDPIECE-NEW_W0QQitemZ400055786672QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d252edcb0&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1326%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50 similar to this one but higher top rpm tho
Quote from: dohabee on June 27, 2009, 06:34:34 PM
So I got a wood cutting blade for my dremel in the mail today from jackstoolshed.com.
I put a blade in and tightened it down then revved the dremel up to full speed.
I guess it wasn't properly balanced because it immediately bent the shank albout 45 degrees from the centrifugal force and then it was really unbalanced.
In the process it sawed a nice cut down to the bone on my knuckle.
Hopefully the company I bought the chitty thing from will refund me.
the shaking was so severe that it bent something in my dermel and now it is out of balance so I may try to get them to cover that too.
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10500.jpg)
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10501.jpg)
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10505.jpg)
(http://i725.photobucket.com/albums/ww251/dohabee/SDC10504.jpg)
btw where you attached the blade , is thre a raised notch type thing that barely fils the center hole in the blade? ive got a few of those for my foredom, if i can find a spare, ill send it to you. it eliminates off balanced tools/blades/ other attachments
here is the one i bought http://www.jackstoolshed.com/index/page/product/product_id/2161/product_name/High-Speed+Steel+Saw+Blade+Set+for+Rotary+Tools+-+1%22+to+2%22+Diameter+-+18%22+Shank+Mandrels
I don't know if you can tell from that picture.
It does have a raised part in the center that fits the hole in the center of the blade.
Thanks for the offer, if you find a spare I'll give it a try :cheers:
kk
Pretty!
Gonna get a stitch (3, maybe 4)? Or are you gonna do the tough-guy thing?
As far as the Dremel:
IIRC, there's a support bearing around the output shaft (before the collet), inside the housing. The modern bearings are synthetic and easily worn out of spec. Most folks use a single piece of electrical tape between the shaft and bearing, cut to size. The bearings aren't replaceable (square overall dimensions, hole in the middle, two halves, black plastic, each glued into place). Good luck!
Post pics with results!
Ohhhh knuckle cuts are soo much fun [/sarcasm]
Quote from: wladziu on June 28, 2009, 12:47:38 AM
Gonna get a stitch (3, maybe 4)? Or are you gonna do the tough-guy thing?
tough guy thing of course :D
I just super glued it closed, stitches hurt worse anyway because of all the scrubbing and poking.
Quote from: yamahonkawazuki on June 27, 2009, 08:53:18 PM
Quote from: The Buddha on June 27, 2009, 07:19:22 PM
Quote from: ohgood on June 27, 2009, 06:44:15 PM
ouch ! even if it were placed right next to the collet, i'd bet a vibration would be pretty bad at 5-10k rpm.
good thing you didn't loose an eye !
Dremel hits 28,800 in the old days.
I had a cordless - prolly still do but haven't used in years due to having a house since 96 - but it was my slow dremel - aka - it had a slow setting - yes a paltry 15,000 rpm. The second one was 30,000.
In the old days the dremel's were better too. I am using my 15 yr old crastfman, but have busted the 3 year old dremel.
Cool.
Buddha.
ive Got a flex shaft on my jewelry bench made by foredom. wiht a pedal speed lever which goes from 400-30k, same wiht an identical unit at my home. and balace is key. sometimes hole in saw, is too big for shaft etc ive actually made a spacer out of superglue. mic'ed the gap so all sides were equal, and vibes were a minimum. 15 mins worth of work;. but at 30k when oh my goodness breaks it can and often does get messy http://cgi.ebay.com/rle-FOREDOM-TX-300-1-3-HP-w-30-HANDPIECE-NEW_W0QQitemZ400055786672QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d252edcb0&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1326%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50 similar to this one but higher top rpm tho
didn't know you did jewelry stuffs. got any pictures of your bench n blocks ? pictures of your work ?
(sorry for the thread jack) :)
Are the RPMS reccomended for that blade listed on its package? Most rotary cutting blades/bits I buy have a warning like... Do not use over 4,500 RPM
Bloody Hell!
Quote from: scottpA_GS on June 28, 2009, 08:32:42 AM
Are the RPMS reccomended for that blade listed on its package? Most rotary cutting blades/bits I buy have a warning like... Do not use over 4,500 RPM
nope I checked, the only warning is not to use it with the wrong kind of power tool.
I swear I read something online that said 30k rpm but I can't find it now. :dunno_white:
Sure did a number on your finger... Good thing thats all it took out. :cheers:
Ow Ow Ow Ow Ow.... :o
well, at least you weren't holding it in your lap...... :o :o
Electrical Tape works good at holding gaping holes Closed.The Guys gave me Hell at the Gap for having Electrical tape in my First Aid Kit. :icon_lol: :icon_lol: 2 Things are a must in my Kit.Electrical tape and Vet Wrap. :thumb:
That kinda looks like it sucked... lol, I actually did that same thing before only it was a high speed pnumatic angle grinder.... Those grinding disks, kinda burn the skin away instead of cut it though... doesnt smell too good, and you have to scrape away the crusty nastyness of skin it leaves.
Quote from: Jughead on June 30, 2009, 07:10:51 AM
Electrical Tape works good at holding gaping holes Closed.The Guys gave me Hell at the Gap for having Electrical tape in my First Aid Kit. :icon_lol: :icon_lol: 2 Things are a must in my Kit.Electrical tape and Vet Wrap. :thumb:
Ive also carried ( and still do) a small roll of duct tape. and a piece of plastic. film, incase of some gnarliness. can coer it if need be. strips of tape will hold in place until help is obtained
Anyone seen the new Nexcare Duct Tape Bandaids? I got a Box a while back.Just can't leave them on Long they Peel Hair and Hide when you try to remove them. :icon_lol:
I've got 2 packs of Quick Clot, super glue and gauze in my first aid kit. That's all anyone ever needs. If it's too small for QC, it's too small to worry about.
OOoooh, be careful with that stuff. Not good if you inhale it.
Sometimes folks open the package too hard in an emergency and it explodes all over their face, like a bag of Cheetohs when you're drunk.
Hard to use it when your eyelids are stuck closed.
It's great stuff, if you're calm enough to use it. We were issued a few bags for my tank crew, in the war. Always wanted a chance to use it. (Actually part of what inspired me to follow medicine.)
Don't try to use it on viscera, of course.
You just keep on surprising me, Terry. You know about the tampon trick, too, right? Not really that effective, but pretty cool.
Tampon? :icon_eek:
I use the super glue......
never seen the duct tape bandaids...
Used the electrical tape, only works if you tape it back onto itself, otherwise it wont hold sufficiently..
I've also used vaseline pushed into a cut to stop bleeding, string, and saranwrap.... Among other things... what evers handy...
I'd say the user is dangerous rather than the saw blade, as the thread title suggests. Let the tool do the work, if it ain't up to the job, buy one that is.