Fein Multimaster RS
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The Fein MultiMaster RS is a variable speed oscillating tool for cutting, sanding and grinding. It is produced by C. & E. Fein GmbH and has a broad assortment of accessory blades. The MultiMaster operates by high-speed oscillation rather than rotation or reciprocation. The tool permits the user to either do fine and delicate work or to be more aggressive, depending on the accessory blade and material.
Description
The Multimaster's variable-speed triangular sanding pad oscillates between 12,000 rpm and 21,000 rpm. Because of its oscillating action, the Multimaster operates smoothly and is relatively quiet compared to some power sanders.
A similar low-amplitude high-speed oscillating action is used by the Stryker saw for autopsies. This type of saw will cut rigid materials such as bone or plaster casts, "usually" without cutting soft tissues. The resistance of any tissue (or any material) to the tool motion depends on its freedom of movement at the current frequency, so tuned, tense or supported skin, tendons, cartilage, fingernails, etc. are still susceptible to damage under normal conditions.
Motion amplitude
The tool head oscillation amplitude is fixed at about 3 degrees, which must always be kept in mind when attempting close or detail work with non-circular tools.
Vibration
The powerful (250w) vibration of the hand tool can cause post-use hand and arm pain, especially after prolonged use.[citation needed]
MultiMaster applications
Wood working
- Detailing and profile sanding
- Fine and distressed finishes with common Scotch Brite pads and hook & loop pad
- Window frame restoration, glazing removal, lead abatement with dust extractor
- Precise plunge cuts
- Cut mortises and fine tune tenons- Refitting doors with new hardware
- Flush cut; wood plugs, dowels & pins
- Fine fit, cabinet moldings & trim
- Rasp & shave
- Safe sanding on treated lumber with dust extractor
Construction
- Trim, installed door jambs and moldings for new floor materials
- Flush cut shims
- Precise, trim cuts on attached wood siding & drywall
- Plunge cuts for electrical outlets in base boards & drywall
- Remove; caulk & adhesives
- Grout removal
- Sanding down quick-set/thin-set
- Trim linoleum
- Spot repairs to carpet & linoleum
- Environmental remediation, with dust extractor
- Vibrate; small & intricate concrete jobs
- Cut; aluminum & plastic, gutters & downspouts
- Cut; plastic plumbing pipe, cut pipe flush to floors
- Cut conduit [disambiguation needed] and Copper pipe
- Cut flush against porcelain toilet bowls (when replacing internal parts)
- Precision cuts in vinyl siding
- Cut-outs of base board moldings for installation of appliances without removal of moldings
- Cutting out hardwood floors for vent installation
- Hardwood floor plank removal/replacement
Automotive, marine & aviation
- Automobile restoration
- Removal of undercoating (automotive)
- Remove; gaskets, under coatings & sealants
- Cleaning boat bottoms of built up
- Cleaning personal watercraft of buildup
- Use to sharpen edges of skis (sandpaper)
- Cut; metal, fiberglass & composite body panels
- Cut, shape and sand fiberglass, carbon fiber & other composites
- Sand & shape body fillers Smooth & polish non-ferrous metal & welds
- Polish; paint, aluminum & stainless steel in hard to reach areas
- Custom vehicle detailing, polish hard to reach; body, frame and drive train areas
- Auto headlights - after a while the lenses dull. Use sandpaper or polishing pad to restore.
References
English, John. (December 1999). The Very Fein MultiMaster. Woodworker's Journal.