There are things for which putty knives are nearly ideal tools, yet they lack a certain something when being used for really sticky substances, like roofing tar. I want all the tar to come off the knife easily!
-- Vernon, Nov 06 2016

Putty knives https://www.lowes.c...ls-Paint/4294515325
There exist a wide variety. They are intended to cut putty, and other putty-like substances, so they don't have sharp blades. [Vernon, Nov 07 2016]

Video of roofing tar getting used https://www.youtube...watch?v=Xq8ouoFL-zs
Also known as "roof cement". [Vernon, Nov 07 2016]

Teflon putty knife http://www.greatpla...on-putty-knife.html
This appears to be a Non-Stick Putty Knife - an ordinary putty knife with non-stick coating. [MaxwellBuchanan, Nov 07 2016]

What's roofing tar?
-- MaxwellBuchanan, Nov 06 2016


I wonder if a commercial waterproofing spray wouldn't accomplish this.
-- Voice, Nov 06 2016


// What's roofing tar? //

A revolting, poisonous, sticky goo with a vile odour and worse taste.

Outside the U.S. it's known as "Jack Daniels".
-- 8th of 7, Nov 06 2016


What's your poison then Mr. Gourmet Zombie?
-- Voice, Nov 06 2016


As a beverage, single malt whisky.

Otherwise, Zyklon-B ...
-- 8th of 7, Nov 06 2016


Maybe what you need is a Teflon blade. Searching "Teflon putty knife" produces a number of hits, for example <link>.
-- MaxwellBuchanan, Nov 07 2016


The answer is simply to develop non-stick putty, shirley ?
-- 8th of 7, Nov 07 2016


[MaxwellBuchanan], did you not notice that the link you provided states that the item is "out of stock or discontinued"? What good is that?
-- Vernon, Nov 07 2016


Well, there you go then, [Vernon]. Either the teflon putty knives are available for sale (in which case mfd widely known to exist); or they are unavailable due to the fact that they don't work (in which case mfd - doesn't work).
-- MaxwellBuchanan, Nov 07 2016


Teflon, while amazing, seems a little over-used in the non-stick industry. Surely there are other ways of making things non-stick. How about making the surface of the putty knife like a membrane, with a lots of tiny holes in it, and pumping some fluid out of these holes? You'd have a weird sweaty slippery knife.
-- mitxela, Nov 07 2016


There are non-stickier materials than Teflon, but most of them are not very durable, relying as they do on a micro-scale surface structure which is easily damaged.
-- MaxwellBuchanan, Nov 07 2016


Roofing tar is more nutritious and tasty.
-- pocmloc, Nov 08 2016


^ "Burn him ! Burn the unbeliever ! Bring forth the Wicker Man ! Sacrilege ! "
-- 8th of 7, Nov 08 2016


Sp.: sacrilege

(Three errors in one word is something of a record.)
-- MaxwellBuchanan, Nov 08 2016


Sp. fixed.
-- 8th of 7, Nov 08 2016


Disposable plastic putty knife.

Or coat of lithium grease on knife before use?
-- bungston, Nov 08 2016


[MaxwellBuchanan], regarding your suggested mfd's, I'm glad I specified "non stick" without specifying "Teflon".
-- Vernon, Nov 09 2016



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