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Hello, How can I lock a linear slide position in a fast way? Is there a linear slide which provides the option of manually locking the slider position after making the required adjustments?

Hello, This is the first time I draw a modular profile (item) construction. What type of tolerances (and values range) is acceptable and reasonable? I guess that size tolerances are OK, but what about the required precision? If I want profiles to be parallel to each other, can I require it and...

Hello, I want to allow the supplier to manufacture (at least contour cutting) the attached sheet metal by Laser Cutting or Water Jet Cutting technologies. Which type of corners is best for these technologies? Which one is impossible? Thanks,

Hello, I had almost a final design (1.xt, added to this post) and suddenly there was a need to use other castors with another (bigger) interface. The new castor interface is very big, and from using only 1 screw I had to use 4 screws. The Item profile end couldn't connect to the new castor and...

Hello, I am wondering how is connecting a planetary gear to the attached sub-assy is recommended? I used 2 brackets, but I am not sure it's ok.

Hello, I have a question about a thread which exists in a bonded joint. I am adding a simplified picture of such a joint, that we have some issues with: Please pay attention that the thread goes a little bit over the second lower bonded Ultem part. After manufacturing this joint (Including...

Hello everyone, I watched the milling machine worker measuring the upper surface of the machined part while it was still on the milling machine. He didn’t really pay attention to the dial indicator posture/position relative to the part and/or machine. I wonder if there is no importance to the...

Hello, A colleague told me about a problem they had and how they decided to solve it, and I would like to find out what you think about it. His crew designed a chamber (see a simplified picture below) that is expected to be flown and subjected to varied loads and vibration. After getting all...

Hello, I design a holder that on the one hand will have an interface to the CNC base plate and on the other hand will have a direct interface to the machined part. I wonder which type of material the holder should be made of. It should be super precise (parallelism to the base plate, good...

Hello, I design a part made of 304 stainless steel. I am afraid of directly using its threads because of the risk of cold welding in case of misusing bolts that are also made of stainless steel. I thought about using helicoil with dry film lubrication, but have never seen such a soultion in...

Hello everyone, I wonder if I can require a parallelism of a plane to an axis. I am attaching a picture to demonstrate my question - look please at the geometric tolerance in a red color.

hello, I am trying to find out how to evaluate by calculation the anticipated preload decrease as a result of a member creep in my joint. Here is an illustration on the simplified clamped joint I tried to analyze: I know that my ULTEM 1000 member is likely to creep and lead to a preload...

Hello everyone, I guess you all know the familiar formulas for calculating stiffnesses of the bolt and the members in a classic bolted joint. Classic = when all the components (bolt and members) are made of metals (aluminum, steel etc.). But it becomes complicated in my case - a bolted joint in...

I started calculating the stress in a 6-32 female thread in ultem 1000 plate. I suddenly realized that I am using VON MISES equivalent stress that we usually use when dealing with metals that aren't brittle. What is the failure criterion in Ultem 1000? I know how to calculate the shear stress in...

Hey everyone, I have 2 mating parts, and the interface is a sphere surface. In the lower part there are helicoils (marked with red pen), and for creating an axisymmetric 120 deg chamfer for installing the helicoil there is a need to create a small planar face as shown in the picture (a small...

Is there an option of defining 3 plsnar datum features that aren't perpendicular to each other as datums? Sometimes there are cases in which the physocsl interfaces of the part aren't perpendicular, but still should be defined as datums since these are the functional interfaces and in addition...

Hello, In ISO Envelop requirement is by definition a perfect FORM at MMC condition. I couldn't figure out if it also limits the feature's form tolerance in any other case. For example, if I have a hole with a size dimension of 100+/-1 with E modifier - the form should be perfect at MMC, i.e 99...

Hey, I have a conceptual design, and I need to first check its potential strength. Here is a schematic picture of the conceptual design: I have a lifting bridge for lifting the weight through its interface which has 2 Shear pins for taking the shear. The Shaft/Hole fit (marked in purple in the...

Are there any instructions how to choose welding technology (MIG, TIG, EBW, etc.) based on the relevant application? I am designing a structure that should be dynamically (vibrations) tested soon, and I originally instructed to use TIG method. The workshop prefers to use MIG welding. I wonder...

Hello, I decided to read about sheet metal design and manufacture principles for improving my design. I have 2 questions I will be happy to be given answers to: 1. Bending orientation direction. In which case I can afford a larger minimum radius? 2. Second question is regarding spring back...