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- Path: sparky!uunet!olivea!veritas!amdcad!decwrl!adobe!usenet
- From: bennett@adobe.com (Bennett Leeds)
- Newsgroups: rec.woodworking
- Subject: Re: Moulders, shapers, routers
- Message-ID: <1992Dec23.025348.2586@adobe.com>
- Date: 23 Dec 92 02:53:48 GMT
- References: <WOODWORK%92122214253870@IPFWVM.BITNET>
- Sender: usenet@adobe.com (USENET NEWS)
- Reply-To: bennett@adobe.com
- Distribution: na
- Organization: Adobe Systems Incorporated
- Lines: 58
-
- Carty ELlis writes
- > What is the actual definition on the differences between moulders, shapers
- > and routers?
-
- I don't know the formal definitions, if they exist. Here are some practical
- differences:
-
- Routers use bits with cylindrical shanks.
- Shapers have spindles onto which the cutters fit.
- Molders have cutterheads into which knives fit.
-
- Routers typically spin at about 20K rpm, although variable-speed ones
- go as slow as 8K.
- Shapers spin at about 7K - 10K rpm.
- Molders spin at about 4K - 6K rpm.
-
- Routers and shapers are typically vertically oriented. Molders are
- typically horizontally oriented.
-
- Typically, molders have wider cutterheads and blades than either routers
- or shapers. If you fit straight blades into a molder, you have a planer,
- especially if the unit has power stock feeding.
-
- It is possible to buy a molding cutterhead for your shaper or tablesaw.
- Essentially the cutterhead is a wheel that fits onto the spindle (or arbor
- if a tablesaw). There are interchangeable knives that fit into the
- cutterhead. These cutterheads are not nearly as wide as the cutterhead
- built into real molders.
-
- It is also possible to buy a collet that fits in place of the spindle
- on some shapers. This lets you run router bits in the shaper. Unfortunately,
- most shapers spin at half or less of the rpms that most router bits are
- designed for.
-
- You'll find that molders can cut wide molding profiles in a single pass
- (depending on the maximum depth of cut more passes may be needed), while
- shapers and routers, whose cutting areas aren't as wide, will need multiple
- passes at different distances with different cutters for complex profiles.
-
- Typically, molders cut into the face of the board, shapers cut into the
- edges. Routers can cut either depending on the bit.
-
-
- >...I am trying to see if it is cheaper to make my own tounge and groove
- > flooring (14 feet by 18 feet) or get it pre-done?
-
- What's the price differential? For 3" wide planks, you're talking about a
- thousand linear feet of tongues and thousand linear feet of grooves. Of
- the total cost includes buying the attachment for your Shopmsmith and
- blades, I expect it'll be cheaper just to buy the T&G flooring.
-
- The router bits to make this are failry inexpensive, though, and if you
- have a router table setup, this is certainly possible, but even so it may
- not even be worth your time. How are you thicknessing the stock?
-
- - Bennett Leeds
- bennett@adobe.com
-
-