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Thread ID: 139059	2015-03-04 01:32:00	Does any supplier sell "Dremel" tools that are not made out of wet cardboard?	Billy T (70)	PC World Chat

Post ID	Timestamp	Content	User
1395678	2015-03-07 08:50:00	I have a Proxxon tool that I use for drilling my home-etched PCBs, it works well. I used the little sawblade attachment to open an Apple laptop charger once. It went through the plastic with ease. I haven't tried any of the other attachments so far. I expect they would work on a Dremel.	Agent_24 (57)
1395679	2015-03-08 03:52:00	I haven't tried any of the other attachments so far. I expect they would work on a Dremel. It is a safe enough bet that they will work on a Dremel (read: fit a Dremel) or its clones, but durability might not be part of the manufacturer's vocabulary. I have found the rotary saw blades to be OK on softer materials like plastic, though they tend to stall easily at 'cutting' speeds due to lack of torque and anything faster than that will simply melt the plastic rather than cut it. What Demel et-al need is a speed reduction gearbox which would also increase torque and make the accuracy of cuts more consistent. There is only a gnat's tit between 'nearly there' and 'bugger'. As previously mentioned, the reinforced cutting wheels do a good job, but their radius reduces pretty fast. There is a similar effect with grinding tools/wheels, which mould rapidly to the shape of the workpiece whilst simultaneously reducing in diameter at a fearsome rate. Cheers Billy 8-{)	Billy T (70)
1395680	2015-03-08 10:04:00	But are wire brushes specific for dressing wood though? I saw as I waiting next door, a commercial builder use a steel (or some other material) type pear and then cylinder shaped rough bit on his dremel dressing/smoothing up a wooden rail on a staircase at our local tyre shop.	kahawai chaser (3545)
1395681	2015-03-08 21:23:00	It is not reasonable to expect these hobby tools and grinding wheels to do anything other than tickle the surface of the workpiece. If the wheels were made like "real" wheels then they would be too hard for the speed and power available, they would glaze up, the friction at the wheel would skyrocket and the tool would burn out double quick, especially when trying to use the grinder like a rotary file, "leaning" on the work. Grinding wheels are made to break down so that the grits have continuously sharp edges and continue to cut as the workpiece material is removed. With a typical toolroom surface grinder for example, 0.025 mm depth of cut per pass is a sizeable amount, 0.005mm may be more usual. At the other end of the scale, grinding heads we supplied to SKF some 40 years ago could finish grind a 30mm bearing ring from a forging, removing some 0.5mm in diameter to finish size and tolerance 0.005mm, and 0.3 um RA surface finish in 8 seconds cycle time per workpiece. The spindles had 8 hp motors, and the wheels were 25mm diameter loaded with sulphur, running at 40,000rpm. I forget how long the wheels lasted but it was many bearing rings. I expect present day machinery would be even more impressive. If your hobby wheels wear down then consider you are saving the motor from burning out :) They are deliberately made like this.	Terry Porritt (14)
1395682	2015-03-08 21:56:00	If your hobby wheels wear down then consider you are saving the motor from burning out :) They are deliberately made like this. You'd have a helluva hard job burning out a 'dremel' motor, not even those in the chinese clones. The diameter of most tools (other than saw blades or cutting tools) are 5-15mm and they have no torque worth mentioning at low speeds. I only use wire brushes for light surface dressing and my present usage was to eliminate the last of some wood rot from the grain before applying epoxy sealer, but the wire 'bristles were so soft they might as well have been copper. Those that didn't break off on contact just wound themselves into a little ball, and I reckon I'd have had more success with a hard-bristle tooth brush! Under equivalent light usage, the grinding wheels fare no better. Clearly these 'accessories' are "givin' & lookin' tools", because they sure ain't 'usin' tools. I'll source some from across the waters and see how they fare. Cheers Billy 8-{)	Billy T (70)
1395683	2015-03-08 21:57:00	If your hobby wheels wear down then consider you are saving the motor from burning out :) They are deliberately made like this. You'd have a helluva hard job burning out a 'dremel' motor, not even those in the chinese clones. The diameter of most tools (other than saw blades or cutting tools) are 5-15mm and they have no torque worth mentioning at low speeds. I only use wire brushes for light surface dressing and my present usage was to eliminate the last of some wood rot from the grain before applying epoxy sealer, but the wire 'bristles were so soft they might as well have been copper. Those that didn't break off on contact just wound themselves into a little ball, and I reckon I'd have had more success with a hard-bristle tooth brush! Under equivalent light usage, the grinding wheels fare no better. Clearly these 'accessories' are "givin' & lookin' tools", because they sure ain't 'usin' tools. I'll source some from across the waters and see how they fare. Cheers Billy 8-{)	Billy T (70)
1395684	2015-03-08 23:43:00	It is more than likely that the grinding points and wheels supplied by Dremel will be made to a higher standard than the clone ones, in as much as wheel hardness, bond and grits will be matched more closely to the power, speed and usage of the Dremel.	Terry Porritt (14)
1395685	2015-03-08 23:45:00	Dremels are modellers tools - nothing else :)	Zippity (58)
1395686	2015-03-09 00:22:00	Dremels are modellers tools - nothing else :) A Dremel was the only drill I had, as a teenager , many many moons ago. imagine me trying to drill steel with a 1/8" drill at 20,000rpm. :lol: :lol:	1101 (13337)
1395687	2015-03-09 02:06:00	Dremels are useless when in the wrong hands or used for purposes they were NOT intended for :(	Zippity (58)
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