For rapid prototyping, design validation and small batch productions process with low tooling cost is preferred. Single Point Incremental Forming (SPIF) is a die-less sheet metal forming process which requires only low cost forming tool driven by CNC machine in a toolpath to form required geometry at room temperature from sheet blank clamped in a low cost and low stiffness clamping system. In this study, effect of process parameters such as tool radius, feed rate and lubrication are considered on the formability of the truncated profile of AISI 321 Variable Wall Geometry (VWA). Set parameters conditions with 2 level layers are optimized using numerical and statistical approach. Experimentation on the same setup is carried out by selecting the most, least and mid favorable solutions optimized on the basis of forming forces and stresses in the sheet. Geometrical accuracy, sheet thinning, and forming forces are compared analytically, numerically and experimentally addressing the inadequacy of analytically models for Variable Wall Angle Geometries.

Background: Infantile hypertrophic pyloric stenosis (IHPS) is an exceedingly rare cause of postoperative emesis in a case of hiatal hernia. Occasionally it may simulate other etiology of gastric outlet obstruction. Case Presentation: A 32-day-old male baby presented with respiratory distress and vomiting since birth. Diagnosis of eventration of left hemi diaphragm was made on CT Chest. At surgery, hiatal hernia with an intrathoracic stomach was found, which was repaired. On 5th postoperative day, the baby developed vomiting after feeding which gradually turned to be projectile in nature over a week. Contrast meal performed showed malpositioned stomach with delayed emptying. At re-operation, a well-formed olive of pylorus was encountered; Ramstedt pyloromyotomy was done. Postoperative course remained uneventful. Conclusion: IHPS is a rarely described association with hiatal hernia. Pyloric stenosis should be considered in differential diagnoses of postoperative emesis in infants with hiatal hernia.

Background: Congenital hepatic hemangioma usually presents with abdominal distension. Rarely it may cause intestinal obstruction. We present a case of congenital hepatic hemangioma causing neonatal intestinal obstruction. Case Presentation: A 4-day-old neonate presented with clinical and radiological features of neonatal intestinal obstruction. On exploration, a loop of jejunum was found adherent with a hepatic mass, arising from the left lobe of the liver. The hepatic mass profusely bled in an attempt of removing the adherent jejunal loop. Thus, the adherent portion was isolated and jejunojejunal end to end anastomosis was done. The hepatic mass along with an adherent small piece of jejunum was also excised. Histopathology showed hepatic hemangioma. The patient is doing fine on the 10-month follow-up. Conclusion: We report a rare presentation of congenital hepatic hemangioma with neonatal intestinal obstruction. Although the optimum therapy for hepatic hemangioma is medical management, at times, surgical resection becomes a necessary option.