Dremel tool spindle thread size? Home Model Engine Machinist Forum

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Quick and dirty (calipers and counting) measurements of the Dremel spindle are: OD 7.2mm (9/32"?) Pitch around 0.63mm (40tpi?) The spindle has just under 12mm threaded, and 2mm unthreaded (at the end you hold). With a Dremel chuck fully screwed on there is 2mm of thread still showing.

Dremel tool spindle thread size? Home Model Engine Machinist Forum

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DREMEL mototool nose is 3/4" x 12 tpi and the spindle thread is 9/32" x 40 tpi (for collet NUT) Collet size is usually 1/8". (usually because mine has 5 collets of 4 different sizes (2 of 7/64", 1 of 1/8", 1 of 3/32" and 1 of 1/16") and a variable 3-jaw drill chuck). Mine can control motor Speed in 5 steps from 5,000 to 30,000 RPM.

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The Dremel website and other documentation offers no clue. I've tried to measure the thread myself with the following results: - Pitch: a bit over 2 mm, so probably 12 TPI, but measuring over just three crests is not too exact. - Diameter: I get 18.2.18.6 mm, which works out to something like 47/64" which is totally weird.

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Dremel and most other rotary-tool manufacturers use a rare thread size on their tools. I can't even remember what it was. While you can buy a tap that would fit it, they're hard to find and just about the cost of a Stew Mac base if I remember correctly. Also, you're likely to use it once, and that's no way to save money.

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The Dremel 4000 variable speed rotary tool offers the highest performance and most versatility of all Dremel rotary tools. The increased strength of its motor plus electronic feedback circuitry enables consistent performance at all speed levels. Dremel 4000 can use all existing Dremel accessories and attachments plus high-performance attachments to complete the widest range of projects. A slim.

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Workshop Practice Series No. 27 "Spndles" by Harprit Sandhu gives the following. dimensions for the Dremel Thread - 0.277" x 40 TPI. On pages 132/133 drawings for the spindle, collet & cap. Regards. Brian.

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thread repair with them, but they really cut at that speed. But for the electric Dremel tool, I have switched to the .035" thick and 1-1/4" diameter fiber reinforced cut off discs. I get them from McMaster Carr. They have a 1/8" hole, so I make my mandrels using a 5-40 screw, which measures .125" on the nominal. You can buy mandrels

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Dremel picked .275"-40 threads, which is the same size as WW type 8 mm watch lathe collets, designed around 1875. The taps and dies are mostly sold to people with that type of watch lathe to make new collet draw bars and special spindle tooling like chuck arbors.

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Just calculate the TPI by measuring the threads on the Dremel. GailInNM Administrator. Staff member. Administrator. Global Moderator. Joined Feb 17, 2008 Messages 2,323 Reaction score 436. Feb 22, 2010 #5 Depending on your application and Dremel model, you may not need to cut any threads. A simple clamp is often sufficient.

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The collets are marked with corresponding shank size: no rings - 1/8 inch (480), 1 ring - 1/32 inch (483), 2 rings - 1/16 inch (482), 3 rings - 3/32 inch (481).. The Dremel Multi-Max oscillating tool uses a clamping screw and a washer to secure accessories onto the tool. A Hex Key wrench is used to loosen and tighten the clamping.

Dremel tool spindle thread size? Home Model Engine Machinist Forum

A second attempt at measuring the pitch without thread gages come a little closer to .75mm That would be .004" per thread wider than a 40TPI pitch. Over the length of a thread gage that would be visible. It is also possibly a propitiatory thread size specific to Dremel. None of my measurements work out to any standard thread. Rick

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Dremel thread size?? Subscribe to this Thread. Thread Tools Search this Thread #1 09-09-05, 02:38 PM sandy2000. Member. Thread Starter. Join Date: Nov 2000. Posts: 195 Upvotes: 0 Received 0 Upvotes on 0 Posts Dremel thread size?? While attaching the flex shaft to a Dremel rotary tool you screw a cap (the one with a square hole in it) on the.

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My Dremel model 328 from 1987 is 20 mm by 2.5 mm pitch, My Dremel model XPR 400 2008, is 3/4 inch and 12 TPI. I have no idea why the 1987 dremel is metric and the XPR 400 is imperial. The moulded thread on the XPR 400 measures .741 to .746 diameter.It is not round.

Dremel tool spindle thread size? Home Model Engine Machinist Forum

attachment and then loosely thread the collet nut 12 onto it so that an accessory can be inserted (Fig. 6). 7.. Four different size collets to accommodate different shank sizes, are sold separately for your flex-shaft. To install a. 1-800-4-DREMEL (1-800-437-3635) www.dremel.com Safety Rules for Flex-Shaft Read the tool manual