Jackson and Sharp truck similar to many of the period. The sideframes should be attached to the bolster with 5/32" O-80 phillips head screws. The brake beams should be attached to the sideframes with 3/16" O-90 hex head screws. The screws are available from J I Morris: https://jimorrisco.com/ . These models are priced at the Shapeways cost, there is no markup. When the model arrives, check model for damage. They are carefully designed to conform to the dimensions that Shapeways can print. If anything is broken or there are flaws in the print, take a photo, and email it to Shapeways with a request for a reprint. Inspect everything including the brake piping assembly. Shapeways should also reprint models that have areas where the plastic and the support material melt together creating hard crusts that are difficult to remove. My experience is that their customer service is reliable. Prepare the model by soaking overnight and carefully washing it in kerosene to remove the white support material that frequently remains on the print obscuring the detail. Spray the model with a filling sandable primer. I like Dupli-color black for trucks, and grey or red for cars. Inspect, sand, install handrails, brakewheels, trussrods, etc. and then paint. These models are designed for Northwest Short Lines shouldered axle wheelsets in the 33" diameter that were used for both passenger and freight cars of this vintage. I have completed all of these models and many are award winners. Please report any problems with fit or assembly to me so that I can make adjustments.