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Tersa vs Terminus planer heads ?5/3
Different knife hold down systems....Tersa is inertia/wedge based and Terminus is wedge/set screws.
Tersa knives slide out sideways (thru hole in machine) to remove/install whereas Terminus are removed/installed more like conventional straight knives.
Do they use the same disposable knives or are the knives different enough one has to make sure to buy the right ones ?
Main inspiration for asking is I notice an auction coming up where the seller describes the 20 inch planer as having a Tersa head. But in looking at closeup photos of head, pretty sure I see set screws in the knife wedges...which would make it a Terminus.
After I posted above it occured to my feeble brain to simply Google them both and have a look see at the profiles. They are different....not interchangeable at all.
Terminus blades are more expensive than Tersa when comparing 20 inch Tersa HSS to 20 inch Terminus HSS... a low of $22 vs $39 and a high of $29 vs $51.
Also, there seems to be a greater variety of Tersa blade alloys such as M42 and chrome.
We carry alot of the Terminus and Tersa in Solid Carbide as well.
1. Are they really all carbide or carbide tipped ? (either would cut equally ok...just curious)
2. Are Terminus knives more expensive due to being thicker, or due to lower production ?
3. Any idea of Tersa knife sales vs Terminus sales in volume ?
1. Yes, they are solid carbide, they is a big reason they are alot more expensive also.