Precision and indirect percussion thumb|Demonstration of how to place the intermediate piece.Both percussion with an intermediate piece and pressure carving share common technical points, among them the difficulty of distinguishing the scars left by one and the other. The remaining nuclei of both are, on the other hand, completely different. In the case of pressure, the tool is no longer a hammer in the strict sense of the word, since the compressors, that is, the tools used, do not hit; they only press so hard that they exceed the elastic limit of the rocks, breaking them according to the conchoidal fracture model. For this reason, it is difficult not to associate the compressors with the hammers.
precisioN and INdirecT PErcUssion thuMB|DEMoNstrAtIon of hOw To plACE tHe interMeDiAte piece.Both PerCUssiON wIth an IntermeDiatE pieCE And pressURe caRVing sharE COmmon technical poInts, amoNg thEM the diFfiCultY of diStinguisHing the scARs leFt by one aNd the oTHEr. the reMaininG nUCLei of both arE, on the oThER hanD, cOmpleteLy diFfereNT. iN the cAse OF presSurE, the tool Is no lOnger a hAmMeR in ThE sTricT seNse of the wOrd, since the cOmPresSors, thAt iS, the tOoLS used, do noT Hit; they onLY prESs sO haRd ThAt they exceEd tHe eLastic Limit of THe RockS, brEakInG Them acCordIng to ThE conchOiDaL fRactURe mOdEl. fOr tHIs rEaSon, It IS difficulT not to assOciAte THE ComPressOrS WIth the HammERS.