Pig horn (4 or 6 tip horns on mother horn) 
	Significantly better performance when reduced joint contact area.

Branson SN_proj
	Lovett3.90 - reducing xdu contact dia with 40 kHz SN horn reduced joint temp (16.5mm = best)

Torques
	Sonics and Materials - 'Model 1098 press (20 khz)'.pdf (p. 13)
	http://www.dukane.com/us/se_stackarticle.htm
	

Reconditioning surfaces
	Sonics and Materials - 'Model 1098 press (20 khz)'.pdf (p. 20)	
		400 or finer grit, figure 8 pattern